第一篇：北郵網(wǎng)絡(luò)學(xué)院大學(xué)英語(yǔ)2階段作業(yè)

一、閱讀理解（共1道小題，共25.0分）

1.In the eighteenth century young ladies in Italy knew history and geography little.Once the French officer in Rome was giving a ball to which many important people were invited.The Italian Minister（大臣）came very late.A young lady, who knew him, saw him enter the ball-room and asked why he was so late.“Oh, nothing important,” answered the Minister.“Our head forgot to take his letters with him and went back to his hotel to bring them.If he had left them in Brazil we should have had to wait at least six months for them.” “Is Brazil so far from Rome?” asked the lady, who knew very little geography.“It is in the New World,” said the Minister.“In the New World?” repeated the lady in great surprise.“Yes, in the New World, which was discovered by Christopher Columbus.” When the young lady heard this, she rushed into the middle of the ball-room and shouted as loud as she could: “Ladies and gentlemen, have you heard the latest news? A new world has just been discovered by a certain Christopher Columbus.” 1.Why was the Minister late? A.The head left his letters in Brazil.B.He had a traffic accident.C.The head had to go back to Brazil.D.The head left his letters in the hotel.2.Where did the head leave his letters? A.In the hotel.B.In Brazil.C.In his office.D.In Rome 3.Why did the young lady shout? A.She wanted to tell the surprising news.B.She was the hostess of the ball.C.She knew the Minister.D.She had never heard about Columbus.4.Her shouting showed she was______.A.clever B.lack of knowledge C.thoughtless D.knowledgeable 5.The best title for the passage is ______.A.The New World B.Surprising News C.An Ignorant Italian Woman D.Christopher Columbus

試題分值：25.0 得分：[5, 5, 5, 5, 5] 提示：[1]D.細(xì)節(jié)題。本題問(wèn)“為什么大臣遲到了？”中心詞是“Minister late”。答案在第三段。該段大意是“‘哦，沒(méi)什么嚴(yán)重的事情’大臣回答道。‘我們上司忘記帶信了，所以他就回賓館取信去了。如果他把信件遺留在巴西的話，那我們可要等上至少六個(gè)月了。’”據(jù)此，可知本題答案是D。

[2]A.細(xì)節(jié)題。本題問(wèn)“那個(gè)大臣的上司把信忘記在什么地方了？”中心詞是“head”和“l(fā)etters”。答案在第三段，該段大意請(qǐng)參考第一題。答案是A。

[3]A.細(xì)節(jié)題。本題問(wèn)“為何那個(gè)年輕女士叫了起來(lái)？”中心詞是“the young lady shout”。答案在最后一段，該段大意是“女士們、先生們，你們聽(tīng)說(shuō)了最新的消息了嗎？一個(gè)叫哥倫布的人不久剛發(fā)現(xiàn)了一個(gè)新世界。”據(jù)此，可知答案是A（她想告訴大家這個(gè)驚人的信息）。B的意思是“她是舞會(huì)的女主人”，C的意思是“她認(rèn)識(shí)那個(gè)大臣”，D的意思是“她從沒(méi)聽(tīng)說(shuō)過(guò)哥倫布”。[4]B.推斷題。本題問(wèn)“她的叫喊表明她_______。”推斷題一般需要我們先瀏覽一下選項(xiàng)。A的意思是“聰明的”，B的意思是“知識(shí)缺乏的”，C的意思是“無(wú)思想的，笨的”，D的意思是“有見(jiàn)識(shí)的”。根據(jù)第三題的解釋我們可以看出這名女士對(duì)哥倫布發(fā)現(xiàn)新大陸（新大陸是15世紀(jì)末發(fā)現(xiàn)的，而本文的背景是18世紀(jì)）的這種大事都不知道，可見(jiàn)其缺乏知識(shí)。據(jù)此，答案是B。

[5]C.中心思想題。本題讓我們給文章選個(gè)最好的標(biāo)題。我們可以先瀏覽每個(gè)段落的第一句話。第一段就是一句話，該句大意是“十八世紀(jì)的意大利少女,她們的歷史知識(shí)、地理知識(shí)一般來(lái)說(shuō)非常貧乏。”讀到這里，我們應(yīng)該可以知道這樣的一個(gè)句子明顯就是文章大意的概括，所以題目就要和此相關(guān)。當(dāng)然，你也可以再繼續(xù)讀幾段，你會(huì)發(fā)現(xiàn)文章出現(xiàn)了一名女士和一位意大利大臣之間的對(duì)話。最終，我們選擇C（一個(gè)無(wú)知的意大利女性）。

二、單項(xiàng)選擇題（共15道小題，共75.0分）

1.The prospect of working under a woman_________ the ultimate indignity.A.formed B.came C.constituted D.composed 知識(shí)點(diǎn): 第一部分 學(xué)生答[C;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值:

C;5.0 該題選C，題目大意是“在一個(gè)女人手下干活，就覺(jué)得是最大的侮辱。”

提示: constitute：及物動(dòng)詞 vt.構(gòu)成，組成

This move constitutes an act of aggression.這一舉動(dòng)構(gòu)成了侵略行為。

2.3.Being _________ money and wanting to do something useful, I applied.A.short of B.short for C.1ack of D.slim of 知識(shí)點(diǎn): 第一部分

A;5.0 學(xué)生答[A;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值: 該題選A，題目大意是“我因?yàn)槭诸^很拮據(jù)，同時(shí)也想干點(diǎn)有用的事，于是便提出了申請(qǐng)。” be short of：有“缺少??”之意

1.We′re short of cash.我們的資金不足

提示: 2.The rebels were short of gunpowder.反叛者們?nèi)鄙購(gòu)椝帯?/p>

3.Otherwise you′ll be short of money all term.否則你真?zhèn)€學(xué)期都將缺錢。

4.5.The evergreen shrubs struggled to _________ the dust and fumes from the busy main road.A.live B.survive C.fight D.resist 知識(shí)點(diǎn): 第一部分

B;5.0 學(xué)生答[B;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值: 該題選B，題目大意是“這些冬青灌木經(jīng)受著從繁忙的大街一吹來(lái)的塵煙，掙扎著活下去。” survive： 及物動(dòng)詞 vt.1.在...之后仍然生存，從...中逃生

Only two passengers survived the air-crash.提示: 這次飛機(jī)失事只有兩名乘客幸免于死。

2.比...活得長(zhǎng)；喪失(配偶，親人等)She survived her husband by twenty years.她丈夫去世后她又活了二十年。不及物動(dòng)詞 vi.活下來(lái)，幸存；殘留 Few survived after the flood.洪水后極少有人生還。6.7.It _________an awkward journey.A.tested B.verified C.proved D.turned 知識(shí)點(diǎn): 第一部分 學(xué)生答[C;] 案: 得分: [5]

標(biāo)準(zhǔn)答案: 試題分值:

C;5.0 該題選C，題目大意是“這上路去那兒原來(lái)還真麻煩。”

prove：及物動(dòng)詞 vt.1.證明，證實(shí)

I′ll prove to the world that he was right.提示: 我將向世人證明他是對(duì)的。

The lawyer proved the innocence of his client.律師證實(shí)了他的當(dāng)事人的清白。2.表現(xiàn)，顯示

She has proved herself unreliable.她的表現(xiàn)說(shuō)明她靠不住

8.9.Bill has ________ to Beijing University for a teaching assistantship, but his chances of getting it are slim.A.proved B.attached C.applied D.asked 知識(shí)點(diǎn): 第二部分

C;5.0 學(xué)生答[C;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值: 該題選C，題目大意是“比爾已向北京大學(xué)申請(qǐng)助教職位，但他得到它的可能性很小。” apply to的賓語(yǔ)在內(nèi)容上應(yīng)當(dāng)是對(duì)之做出申請(qǐng)的提示: 個(gè)人或機(jī)構(gòu)，例如大學(xué)(university, college)。The young girl applied to the company for a job.女孩向這家公司就職。

10.11.When he came down to breakfast, he was ________ the pleasure of a new, great discover.A.full of B.filling C.satisfied with D.beaming with 知識(shí)點(diǎn): 第一部分

D;5.0 學(xué)生答[D;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值: 該題選D，題目大意是“當(dāng)他下樓來(lái)吃早餐時(shí)，他正因?yàn)橐粋€(gè)新的大的發(fā)現(xiàn)而快樂(lè)。” beam with：堆滿笑容，眉開(kāi)眼笑

提示: Upon hearing the good news he beamed with joy.一聽(tīng)到這個(gè)好消息，他高興得 眉開(kāi)眼笑。12.13.The razor and water ________ the job.A.act B.do C.perform D.function 知識(shí)點(diǎn): 第一部分 學(xué)生答[B;] 案: 得分: [5] 提示:

標(biāo)準(zhǔn)答案: 試題分值:

B;5.0 該題選B，題目大意是“這把剃須刀與水一起就可以了。”

14.15.Seen ________ the eyes of a young friend Einstein was a simple，modest and ordinary man.A.upon B.through C.with D.in 知識(shí)第一部分 點(diǎn): 學(xué)生答[B;] 標(biāo)準(zhǔn)答案: 案: 得[5] 試題分值: 分:

B;5.0 該題選B，題目大意是“在一個(gè)年輕的朋友的眼里，愛(ài)因斯坦是一個(gè)樸素、謙虛而普通的人。”

句首的Seen是過(guò)去分詞，引出一個(gè)過(guò)去分詞短語(yǔ)，在句中作狀語(yǔ)。

過(guò)去分詞作狀語(yǔ)應(yīng)注意，過(guò)去分詞與句子主語(yǔ)之間的關(guān)系

過(guò)去分詞作狀語(yǔ)表示被動(dòng)或完成的動(dòng)作。過(guò)去分詞提與句子主語(yǔ)之間通常存在邏輯上的動(dòng)賓關(guān)系。如： 示: Grown in rich soil, these seeds can grow fast.種在肥沃的土壤里，這些種子能長(zhǎng)得很快。

分詞在句子中作狀語(yǔ)，分詞的邏輯主語(yǔ)與句子的主語(yǔ)一致。使用何種分詞，要取決于分詞與句子主語(yǔ)之間的關(guān)系：主謂關(guān)系用現(xiàn)在分詞，動(dòng)賓或被動(dòng)關(guān)系用過(guò)去分詞。比較：

Seen from the sky, our city is very beautiful.(our city與see之間是被動(dòng)關(guān)系)Seeing from the sky, we find our city is very beautiful.(we與see之間是主謂關(guān)系)16.17.There were still situations__________ which I couldn't be certain my decision had been the right one.A.upon B.on C.in D.with 知識(shí)點(diǎn): 第一部分 學(xué)生答[C;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值:

C;5.0 該題選C，題目大意是“在有些情況下我仍然不能確定自己的決定是否正確。”

提示: situation：名詞 n.處境，境遇

He is in a difficult situation.他處境困難。

18.19.This is the first time I've attended such a big party.That is why I am not __________.A.at easy B.with ease C.at ease D.at loose 知識(shí)點(diǎn): 第二部分

C;5.0 學(xué)生答[C;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值: 該題選C，題目大意是“這是我第一次參加這么大型的聚會(huì)，所以我感到很拘謹(jǐn)。” at ease：舒服的；自在地；不拘束

1.The sergeant gave his men the command “At 提示: ease!” 上士向他的士兵發(fā)出口令：“稍息！”

2.The retired old worker is living at his ease.這位退休工人的生活過(guò)得很舒服。

3.His manner was so bright and pleasant that Arthur felt at ease with him at once.他的態(tài)度這樣爽朗愉快，亞瑟立刻覺(jué)得和他在一起沒(méi)有什么拘束。

20.21.She was made ___________ us everything.A.telling B.told C.to tell D.tell 知識(shí)第二部分 點(diǎn): 學(xué)生[C;] 標(biāo)準(zhǔn)答案: 答案: 得分: [5] 試題分值:

C;5.0 該題選C，題目大意是“我們讓她說(shuō)出了一切。” 英語(yǔ)中有些動(dòng)詞，如:make, see, feel, hear, observe等在主動(dòng)語(yǔ)態(tài)中其賓語(yǔ)不帶to的不定式結(jié)構(gòu)，但在被動(dòng)語(yǔ)態(tài)中，需用帶to的不定式。1.They made us wait for a long time.(We were 提示: made to wait for a long time.)他們讓我們等了很長(zhǎng)時(shí)間。

2.People saw the robber enter the bank.(The robber was seen to enter the bank.)人們看見(jiàn)劫匪進(jìn)了銀行。

22.23.Self-confidence ensures the doctor that the decision he is going to make is ____________.A.sound B.alive C.sensitive D.loud 知識(shí)點(diǎn): 第二部分 學(xué)生答[A;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值:

A;5.0 提示: 該題選A，題目大意是“自信心保證了醫(yī)生對(duì)于他將做出的決定是正確合理的。”

sound：形容詞 a.正確的，合理的，明智的 1.He gave sound and practical advice.他提出了合理而正確的建議。

2.The lawyer presented a sound argument.律師拿出了理由充足的論據(jù)。

24.25.Mr.Smith is going to be ____________ as a lawyer.A.on practice B.in practice C.with practice D.at practice 知識(shí)第二部分 點(diǎn): 學(xué)生[B;] 標(biāo)準(zhǔn)答案: 答案: 得分: [5] 試題分值:

B;5.0 該題選B，題目大意是“史密斯將開(kāi)業(yè)作律師。” in practice：while performing one’s skills（醫(yī)師，律師等）在開(kāi)業(yè)中

1.My elder brother is in practice as a doctor.提示: 我哥哥在行醫(yī)。

2.Someday when you are out in practice as a lawyer, you will thank me for my advice.有一天你出去做律師了，你會(huì)感激我今天給你的勸告的。

26.27.The committee has been __________ my letters for three months.A.going on B.working on C.studying for D.sitting on 知識(shí)點(diǎn): 第二部分

D;5.0 學(xué)生答[D;] 標(biāo)準(zhǔn)答案: 案: 得分: [5] 試題分值: 提示: 該題選D，題目大意是“委員會(huì)把我的信已經(jīng)擱置了三個(gè)月了。”

sit on：delay taking action on;do nothing about 拖延；擱置；忽略

1.sit on the suggestion拖延這項(xiàng)建議

2.They have been sitting on my application for a whole month.他們把我的申請(qǐng)整整壓了一個(gè)月了。

28.29.The doctor decided to _________ Tom’s stomach to remove the tumor.A.open B.open up C.turn up D.light up 知識(shí)點(diǎn): 第二部分

B;5.0 學(xué)生[B;] 標(biāo)準(zhǔn)答案: 答案: 得分: [5] 試題分值: 該題選B，題目大意是“醫(yī)生決定給湯姆的胃開(kāi)刀，切除腫瘤。”

open up：cut open切開(kāi)；給?開(kāi)刀

提示: 1.open up his stomach 給他的胃開(kāi)刀

2.I want a famous doctor to open me up, because it’s safe.我想讓一個(gè)有名的大夫幫我開(kāi)刀，因?yàn)檫@樣安全些。30.

第二篇：北郵網(wǎng)絡(luò)學(xué)院工程數(shù)學(xué)階段作業(yè)二

一、判斷題（共5道小題，共50.0分）

1.若線性方程組陣滿足Rank(A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[B;] 案: 得分: [10] 2.若向量組

中的線性相關(guān)．

A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[A;] 案: 得分: [10] 3.若向量組A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[B;] 案:

線性相關(guān)，則

一定可用

可用 的系數(shù)矩陣A和增廣矩)=Rank(A)，則此方程組有唯一解．

試題分

10.0

值:

線性表示，則

試題分

10.0

值:

線性表示． 得分: [10] 4.若與A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[A;] 案: 得分: [10] 5.若存在線性無(wú)關(guān)．

A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[B;] 案: 得分: [10] 6.試題分

10.0

值:

是向量組

等價(jià)． 的一個(gè)極大無(wú)關(guān)組，試題分

10.0

值:

使式子成立，則向量組

試題分

10.0

值:

二、單項(xiàng)選擇題（共5道小題，共50.0分）

1.(錯(cuò)誤)若線性方程組陣滿足Rank(的系數(shù)矩陣A和增廣矩)=Rank(A)= n，則此方程組（）．

A.無(wú)解

B.有唯一解 C.有無(wú)窮多解

D.不能確定是否有解 知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[C;] 案: 得分: [0] 2.(錯(cuò)誤)

試題分

10.0

值: 當(dāng)k =（）時(shí)，線性方程組A.0或1 B.1或-1 C.-1或-3 D.-1或3 知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[A;] 案: 得分: [0]

有非零解．

試題分

10.0

值: 3.設(shè)向量組，則實(shí)數(shù)t（）時(shí)，線性無(wú)關(guān)． A.≠-3 B.≠-2 C.=-2 D.=-3 知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答案: [B;]

得分: [10] 試題分

值:

10.0 4.設(shè)向量，,則向量 ?可由向量

線性表示的表達(dá)式為

（）．A.B.C.D.知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答案: [B;]

得分: [10] 試題分

值:

10.0

5.設(shè)矩陣的行向量組，線性無(wú)關(guān)，則

（A.0 B.1 C.2 ,)．

D.3 知識(shí)點(diǎn): 階段作業(yè)二 學(xué)生答[D;] 案: 得分: [10] 6.試題分

10.0

值:

第三篇：北郵網(wǎng)絡(luò)學(xué)院工程數(shù)學(xué)階段作業(yè)四

一、判斷題（共5道小題，共50.0分）

1.設(shè)隨機(jī)變量X與Y獨(dú)立，則A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[B;] 案: 得分: [10] 2.設(shè)A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[A;] 案: 得分: [10]

3.設(shè)隨機(jī)變量X與Y獨(dú)立，則X與Y的相關(guān)系數(shù)A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[A;] 案: 得分: [10]

．，則，．

．

試題分

10.0

值:

試題分

10.0

值:

試題分

10.0

值: 4.設(shè)(X，Y)的概率密度A.正確，則常數(shù)． B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[A;] 案: 得分: [10] 5.(錯(cuò)誤)

試題分

10.0

值: 設(shè)（X，Y）的概率密度為獨(dú)立．

A.正確 B.錯(cuò)誤

知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[A;] 案: 得分: [0]，則X與Y相互

試題分

10.0

值:

二、單項(xiàng)選擇題（共5道小題，共50.0分）

1.設(shè)X與Y的相關(guān)系數(shù)差，，則X與Y的協(xié)方（）．

A.-7.2 B.-1.8 C.-1.2 D.-0.18 知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[C;] 案: 得分: [10]

試題分

10.0

值: 2.設(shè)隨機(jī)變量X ～U［1，3］，則（）．

A.B.C.D.知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[A;] 案: 得分: [10] 3.(錯(cuò)誤)設(shè)，如果，則X的分布列

試題分

10.0

值:（）．

A.B.C.D.知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答[C;] 案: 得分: [0]

試題分

10.0

值: 4.設(shè)隨機(jī)變量X的概率密度為（）．

A.B.C.D.知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答案: [B;]

得分: [10] 試題分

值:

5.設(shè)隨機(jī)變量X的分布列為

則（）．

A.1.7 B.2.3 C.-2.3 D.-1.7 知識(shí)點(diǎn): 階段作業(yè)四 學(xué)生答案: [A;]，則D(X)=

10.0

得分: [10]

試題分

10.0

值:

第四篇：2015北郵遠(yuǎn)程教育大學(xué)英語(yǔ)階段2作業(yè)

一、閱讀理解（共1道小題，共25.0分）

1.One day in 1965, when I was a library worker at school, a teacher came to me.She had a student who finished his work before all the others and needed something more difficult for him to do.“Could you help me in the library?” she asked.I said, “Send him along.”

Soon, a golden-haired boy appeared.“Do you have a job for me?” he asked.I told him about a system for sorting books.He picked up the idea immediately.Then I showed him some cards for some unreturned books that though had been returned but not recorded.Maybe some books were put on wrong places.He said, “Is it a kind of a detective job?” I answered yes, and then began his work.He had found three books with wrong card by the time his teacher opened the door and said, “Time for rest!” he argued for finishing the finding job, but the teacher won.The next morning, he arrived early, “I want to finish these books,” he said.At the end of the day, when he asked to work with me more often, it was easy for me to say yes.After a few weeks I found a note on my desk, inviting me to dinner at the boy’s home.At the end of a pleasant evening, his mother declared that the family would be moving to another school area.Her son’s first concern, she said, was leaving the library.“Who will find the lost books?” he asked.When the time came, it was hard to say goodbye.Though at the beginning he had seemed an ordinary boy, his strong feeling of interest had made him different.Do you know who he is? This boy became a great man of the information age: Bill Gates.2.1.Why did the teacher go to the library to find a job for Bill Gates?

2.1.2.3.4.Because the teacher found the librarian quite busy.Because Bill Gates wanted to find a job.Because Bill Gates finished his study quickly and had more free time than the others.Because the library needed a new worker.3.What do you know from the passage?

4.1.2.3.4.Library work was very difficult for Bill Gates.Bill Gates did his job without any difficulty.The librarian was too busy to have a rest.His mother hoped that Bill Gates would stay for his job.1.The sentence “He picked up the idea immediately” means that_____.2.1.2.3.4.he learned that system quickly he collected that system quickly he lifted up that system quickly he improved that system quickly 1.What was Bill Gates expected to do in the library?

2.1.2.3.4.Finding the lost cards.Learning the system.Helping the worker with everything in the library.Finding books with wrong cards.1.How did Bill Gates feel when his family would move to another school area?

2.1.2.3.4.Sad.Pleasant.Worried.Interested.試題分值：25.0

得分：[5, 5, 5, 5, 5] 提示：[1]C.細(xì)節(jié)題。本題問(wèn)“為何那位老師要去圖書館給Bill Gates找工作？”中心詞是“the teacher”和“the library”。答案在第一段的第二句，該句大意是“She had a student who finished his work before all the others and needed something more difficult for him to do.這名老師有一個(gè)學(xué)生，這個(gè)學(xué)生比別的學(xué)生提前完成功課，需要找一些難一點(diǎn)的事情來(lái)做。”據(jù)此可知答案是C。

[2]B.中心思想題。本題問(wèn)“你從文章中可以得知什么？”解決這種題目，我們首先要瀏覽一下選項(xiàng)的大意。A的意思是“對(duì)Bill Gates來(lái)說(shuō)，圖書館的工作太難了。”B的意思是“Bill Gates毫不困難地就完成了圖書館的工作。”C的意思是“那名圖書管理員太忙了，都沒(méi)有時(shí)間休息。”D的意思是“Bill Gates的母親希望他能夠留下來(lái)繼續(xù)做這份工作。”接著，我們要對(duì)每一個(gè)選項(xiàng)進(jìn)行判斷。第二段的第四句話告訴我們，Bill Gates很快就領(lǐng)會(huì)了那位圖書管理員的意思。據(jù)此可見(jiàn)A是錯(cuò)誤的，B是正確的。文章并沒(méi)有說(shuō)那名圖書管理員忙得都沒(méi)法休息，所以C是錯(cuò)誤的。文章的倒數(shù)第二段告訴我們，Bill Gates一家都要搬到外地，Bill Gates的媽媽并沒(méi)有要求兒子獨(dú)自留下來(lái)。據(jù)此可知D也是錯(cuò)誤的。

[3]A.句義理解題。本題問(wèn)我們“He picked up the idea immediately ”這句話是什么意思。A的意思是“他快速的學(xué)會(huì)了圖書館的系統(tǒng)。”B的意思是“他快速的收集了圖書館的系統(tǒng)。”C的意思是“他快速地舉起了圖書館的系統(tǒng)。”D的意思是“他快速地改善了圖書館的系統(tǒng)。” 根據(jù)上面第二題的解釋，我們已經(jīng)知道這個(gè)句子的意思是A。

[4]D.細(xì)節(jié)題。本題問(wèn)“Bill Gates在圖書館里要做什么事情？”中心詞就是“the library”，經(jīng)過(guò)定位我們會(huì)發(fā)現(xiàn)答案在第二段。該段中間幾句大意是“我又給他看了一些未歸還書的書卡，其實(shí)這些書已經(jīng)還回來(lái)了，但是當(dāng)時(shí)并沒(méi)有做記錄。也許其中一些被放在錯(cuò)誤的地方了。”據(jù)此，可知答案是D（Bill Gates要利用這些書卡找到那些書。）

[5]C.細(xì)節(jié)題。本題問(wèn)“Bill Gates對(duì)于自己家要搬到另一個(gè)校區(qū)有什么感受？”中心詞是“another school area”。答案在倒數(shù)第二段，該段大意是“幾周之后，我在辦公桌上發(fā)現(xiàn)了一張紙條，孩子一家邀請(qǐng)我去共進(jìn)晚餐。在共度了一個(gè)美好夜晚之后，孩子的母親告訴我說(shuō)他們一家將會(huì)搬到另一個(gè)校區(qū)。她說(shuō)孩子最關(guān)心的就是要離開(kāi)圖書館了。孩子會(huì)問(wèn)，‘誰(shuí)來(lái)找那些丟失的書呢？’分手時(shí)，我們真的是難舍難分。雖然在開(kāi)始的時(shí)候，這個(gè)孩子似乎很平常，但是他做事情的那種強(qiáng)烈的興趣使得他與眾不同。”據(jù)此可見(jiàn)Bill Gates的感覺(jué)是C（擔(dān)憂的）。

二、單項(xiàng)選擇題（共15道小題，共75.0分）

1.Trying to make some money before entering university，the author _________ a teaching job.2.1.2.3.4.applies to applies for demands for asks for

知識(shí)點(diǎn): 第一部分 學(xué)生答[B;] 案: 得分: [5]

標(biāo)準(zhǔn)答

B;

案:

試題分

5.0

值: 提示: 該題選B，題目大意是“進(jìn)入大學(xué)之前，盡力去攢一些錢。作者申請(qǐng)了一個(gè)教書職業(yè)。” apply for：請(qǐng)求得到

1.He applied for the job.他申請(qǐng)取得這份工作。

2.I want to apply for the scholarship of this school.我想申請(qǐng)這所學(xué)校的獎(jiǎng)學(xué)金。注：apply for與apply to的區(qū)別

apply for 的賓語(yǔ)在內(nèi)容上應(yīng)當(dāng)是希望獲得的事物，例如獎(jiǎng)金（reward），簽證(visa)，貸款(loan, credit), apply to的賓語(yǔ)在內(nèi)容上則應(yīng)當(dāng)是對(duì)之作出申請(qǐng)的個(gè)人或機(jī)構(gòu)，例如大學(xué)(university, college)。apply to 后接人，表示“向誰(shuí)申請(qǐng)”。

We applied to them for help.我們向他們求援。

apply sth to sth 是指把某某物應(yīng)用在某某上，比如說(shuō)：

We can apply this new technology to our new product 我們能把這項(xiàng)新技術(shù)用在我們的新產(chǎn)品上。

3.(錯(cuò)誤)He looked at me with _________ of surprised disapproval.4.1.2.3.4.a looking

an appearance a feature an air

知識(shí)點(diǎn): 第一部分 學(xué)生答[B;] 案: 得分: 提示: [0]

標(biāo)準(zhǔn)答

D;

案:

試題分

5.0

值:

該題選D，題目大意是“他帶著一種吃驚的、不以為然的神態(tài)看著我。” air：名詞 n.1.空氣；大氣

Better let in some fresh air.最好放些新鮮空氣進(jìn)來(lái)。2.天空，空中

The air was full of butterflies.天空中飛舞著許許多多蝴蝶。3.樣子，神態(tài)

He came into the room with an air of importance.他帶著一副了不起的神情走進(jìn)室內(nèi)。4.氣氛

There was an air of mystery in the house.屋內(nèi)有種神秘的氣氛。

1.I arrived on a hot June morning _________ depressed _________ feel nervous.2.1.2.3.4.too...to so...that as...as too...that

知識(shí)點(diǎn): 第一部分 學(xué)生答[A;] 案: 得分: [5]

標(biāo)準(zhǔn)答

A;

案:

試題分

5.0

值:

提示: 該題選A，題目大意是“我在六月一個(gè)炎熱的上午到了那兒，因?yàn)樾那榉浅＞趩剩共桓械骄o張了。”

too...to：“太??以至于不能??”（否定句型）

1.The boy is too young to go to school.這個(gè)男孩太小了，還不能上學(xué)。

2.She runs too slow to catch up with me． 她跑得太慢追不上我。

3.I′m too busy to write to my family often.我太忙而不能經(jīng)常跟家里寫信。4.I love you too much to leave you for a minute.我太愛(ài)你，一刻也離不開(kāi)你。

1.It _________an awkward journey.2.1.2.3.4.tested verified proved turned

知識(shí)點(diǎn): 第一部分 學(xué)生答[C;] 案: 得分: [5]

標(biāo)準(zhǔn)答

C;

案:

試題分

5.0

值:

提示: 該題選C，題目大意是“這上路去那兒原來(lái)還真麻煩。”

prove：及物動(dòng)詞 vt.1.證明，證實(shí)

I′ll prove to the world that he was right.我將向世人證明他是對(duì)的。

The lawyer proved the innocence of his client.律師證實(shí)了他的當(dāng)事人的清白。2.表現(xiàn)，顯示

She has proved herself unreliable.她的表現(xiàn)說(shuō)明她靠不住

1.Before liberation, many laboring people were _________ food and clothes.2.1.2.3.4.enough of lack share of short of 知識(shí)點(diǎn): 第二部分 學(xué)生答[D;] 案: 得分: [5]

標(biāo)準(zhǔn)答

D;

案:

試題分

5.0

值:

提示: 該題選D，題目大意是“解放前廣大勞動(dòng)人民缺吃少穿。”

short of：①缺少，不是 ②達(dá)不到

③主要沒(méi)有??，只要不??

1.We’ll never stop short of goal.達(dá)不到目的，我們決不罷休。

2.Short of delay, well certainly finish the work in time.只要不耽擱，我們一定能按時(shí)完成任務(wù)。

3.Short of replacing hardware, you cannot recover from this situation.缺乏可替換硬件，將不能從這種情況中恢復(fù)。

1.He never did work ________ the solution.2.1.2.3.4.out with forth to

知識(shí)點(diǎn): 第一部分 學(xué)生答[A;] 案: 得分: [5]

標(biāo)準(zhǔn)答

A;

案:

試題分

5.0

值:

提示: 該題選A，題目大意是“他從沒(méi)有說(shuō)清這個(gè)原理。”

work out：固定詞組 ph.1.想出；制訂出；產(chǎn)生出

work out a program 制訂計(jì)劃 2.解決；確定

Can you work out on the map where we are now? 你能在地圖上找到我們現(xiàn)在所在的位置嗎?

1.When he came down to breakfast, he was ________ the pleasure of a new, great discover.2.1.2.3.4.full of filling

satisfied with beaming with

知識(shí)點(diǎn): 第一部分 學(xué)生答[D;] 案: 得分: [5]

標(biāo)準(zhǔn)答

D;

案:

試題分

5.0

值:

提示: 該題選D，題目大意是“當(dāng)他下樓來(lái)吃早餐時(shí)，他正因?yàn)橐粋€(gè)新的大的發(fā)現(xiàn)而快樂(lè)。” beam with：堆滿笑容，眉開(kāi)眼笑

Upon hearing the good news he beamed with joy.一聽(tīng)到這個(gè)好消息，他高興得 眉開(kāi)眼笑。

1.He was the only person I knew who had come to ________with himself and the world around him.2.1.2.3.4.terms words relations

conversations

知識(shí)點(diǎn): 第一部分 學(xué)生答[A;] 案: 得分: [5]

標(biāo)準(zhǔn)答

A;

案:

試題分

5.0

值: 提示: 該題選A，題目大意是“他是我認(rèn)識(shí)的所有的這樣的人中的一個(gè)，他承認(rèn)他自身的有限性并與他周圍的世界和平相處。” come to turns with：accept something one does not want to accept達(dá)成協(xié)議；與?妥協(xié)；和解；讓步

1.come to terms with the workers與工人達(dá)成妥協(xié)

2.He found it difficult to come to terms with his son’s death.他發(fā)現(xiàn)很難正視兒子已死去的現(xiàn)實(shí)。

3.It took John a long time to come to terms with the fact that he would no longer be able to go sailing again.過(guò)了相當(dāng)長(zhǎng)的一段時(shí)間，約翰才不得不承認(rèn)這樣一個(gè)現(xiàn)實(shí)：他不能再去航海了。

1.This all__________ conceited and I guess it is----but a surgeon needs conceit.2.1.2.3.4.sound hears sounds listens

知識(shí)點(diǎn): 第一部分 學(xué)生答[C;] 案: 得分: [5]

標(biāo)準(zhǔn)答

C;

案:

試題分

5.0

值:

提示: 該題選C，題目大意是“這些話聽(tīng)上去很自負(fù)，而且我以為這的確是自負(fù)――但外科醫(yī)師就是需要這種自負(fù)。”

sound：不及物動(dòng)詞 vi.聽(tīng)起來(lái)，聽(tīng)上去

The music sounds very pleasing to the ear.這音樂(lè)聽(tīng)起來(lái)十分悅耳。

1.With my knowledge and experience，I knew any decision I' d made was __________to be a sound one.2.1.2.3.4.bind sound round bound

知識(shí)點(diǎn): 第一部分 學(xué)生答[D;] 案: 得分: [5]

標(biāo)準(zhǔn)答

D;

案:

試題分

5.0

值:

提示: 該題選D，題目大意是“我知道，憑我的知識(shí)和經(jīng)驗(yàn)，我做出的任何決定肯定都是穩(wěn)妥的。” sound：形容詞 a.合理的，明智的

1.I acted on her sound advice.我按她的忠告去做了。

2.Give yourself a sound reason when making decisions.做決定之前要給自己一個(gè)合理的理由。

1.Once I had made a__________ decision，I no longer dwelt on it.2.1.2.3.4.considering considered thinking thought

知識(shí)點(diǎn): 第一部分 學(xué)生答[B;] 案: 得分: 提示: [5]

標(biāo)準(zhǔn)答

B;

案:

試題分

5.0

值:

該題選B，題目大意是“我一旦經(jīng)過(guò)深思熟慮做出某個(gè)決定，就不再去多想它了。” considered：考慮過(guò)的；經(jīng)過(guò)深思熟慮的 He hoped that the committee would think about his considered opinion.他希望委員會(huì)能考慮他經(jīng)過(guò)深思熟慮后提出的意見(jiàn)。

1.Computer is _________ storing millions of bits information.2.1.2.3.4.capable of convert to receive resort to

知識(shí)點(diǎn): 第二部分 學(xué)生答[A;] 案: 得分: [5]

標(biāo)準(zhǔn)答

A;

案:

試題分

5.0

值:

提示: 該題選A，題目大意是“計(jì)算機(jī)能儲(chǔ)存數(shù)百萬(wàn)條信息。”

capable of：有?能力的；有?本領(lǐng)的 1.Susan is capable of hard work.蘇珊能勝任艱苦的工作。

2.I want to be part of a team that′s capable of doing great things.我想成為球隊(duì)的一份子，共創(chuàng)大業(yè)。

3.At critical moments the engineer should be capable of facing all difficulties.在關(guān)鍵時(shí)刻，工程師應(yīng)該有能力面對(duì)一切困難。

1.The doctor suggested that Mike ___________ in hospital until he was fully recovered.2.1.staying 2.stay 3.stayed 4.was staying 知識(shí)點(diǎn): 第二部分 學(xué)生答[B;] 案: 得分: [5]

標(biāo)準(zhǔn)答

B;

案:

試題分

5.0

值:

提示: 該題選B，題目大意是“醫(yī)生建議邁克繼續(xù)住院直到完全康復(fù)。” suggest that...建議

注意：這是從句中用虛擬語(yǔ)氣，即：從句謂語(yǔ)形式是“(should)+ 動(dòng)詞原形”，should多數(shù)情況可以省略，只留動(dòng)詞原形。如：

1.I suggested that we(should)go home.我建議我們回家。

2.The dentist suggested that she(should)come another day.牙醫(yī)建議她改天再來(lái)。3.We suggested that he(should)go and make an apology to his teacher.我們建議他去向老師道歉。

4.She suggested that the class meeting(should)not be held on Saturday.她建議班會(huì)不要在星期六舉行。

1.During the interview, the coach said he was _________ on his team’s winning the game.2.1.2.3.4.failed unable confident dwell

知識(shí)點(diǎn): 第二部分 學(xué)生答[C;] 案: 得分: 提示: [5]

標(biāo)準(zhǔn)答

C;

案:

試題分

5.0

值:

該題選C，題目大意是“在采訪過(guò)程中，教練說(shuō)他很自信他的球隊(duì)能獲勝這場(chǎng)比賽。” confident：形容詞 a.確信的；有信心的，自信的

1.He is quite confident that he will pass the examination.他很有信心通過(guò)考試。2.They are confident of success.他們有信心能夠成功。

3.He is confident of passing the examination.他有信心通過(guò)考試。

4.Patrick was confident of his ability to get work for himself.派屈克自信有能力為自己找到工作。

1.You must _________ the fact that you are no longer as strong as you were.2.1.2.3.4.live on live in live with live up

知識(shí)點(diǎn): 第二部分 學(xué)生答[C;] 案: 得分: [5]

標(biāo)準(zhǔn)答

C;

案:

試題分

5.0

值:

提示: 解析：該題選C，題目大意是“你必須接受這樣的事實(shí)，即：你的身體已不如從前那么強(qiáng)壯了。” live with：accept(sth.unpleasant);to tolerate容忍；接受；學(xué)會(huì)適應(yīng) 1.The air pollution in our city is terrible, but we have to live with it.我們城市空氣污染的非常厲害，但我們還得忍著。

2.You must live with the fact that you’re no longer as rich as you were.Your family has come down in the world.你必須接受這樣的事實(shí)，你已不再富有，你已經(jīng)家道中落了。

第五篇：北郵網(wǎng)絡(luò)學(xué)院光釬通信階段作業(yè)四

一、單項(xiàng)選擇題（共5道小題，共100.0分）

1.階躍型光纖，若n1=1.5，相對(duì)折射指數(shù)差Δ=0.018，試計(jì)算：（1）纖芯與包層之間的臨界角θc＝___________；（2）數(shù)值孔徑NA＝___________。

A.79.110、0.28 B.79.110、0.54 C.11.890、0.28 D.11.890、0.28 知識(shí)點(diǎn): 光纖計(jì)算 學(xué)生答[A;] 案: 得分: [20] 提示:

2.階躍型光纖中，已知纖芯折射率n1=1.51, n2=1.49,纖芯半徑a=4μm,工作波長(zhǎng)λ＝1.31 μm。計(jì)算可得(1)歸一化頻率V=__________；（2）每公里長(zhǎng)度光纖的模式色散Δτ＝__________秒。

A.6.78、6.54×10－11 B.6.78、6.54×10－8 C.4.67、6.54×10－11 D.4.67、6.54×10－8

知識(shí)點(diǎn): 光纖計(jì)算 學(xué)生答[A;] 案: 得分: [20] 提示:

3.計(jì)算STM-1幀結(jié)構(gòu)中段開(kāi)銷SOH的容量(速率)＝__________Mb/s。

A.4.608 Kb/s B.4.608 Mb/s C.15.336 Kb/s D.15.336 Mb/s

標(biāo)準(zhǔn)答

A;

案:

試題分

20.0

值: 標(biāo)準(zhǔn)答

A;

案:

試題分

20.0

值: 知識(shí)點(diǎn): SDH計(jì)算 學(xué)生答[B;] 案: 得分: [20] 提示:

4.有622.080Mbit/s速率的單模光纜傳輸系統(tǒng)，應(yīng)用InGaAs-LD，其It<50mA，標(biāo)稱波長(zhǎng)為1310nm，光譜寬度為2nm。接收靈敏度為-28dBm, 動(dòng)態(tài)范圍≥20dB。采用的光纜其固有損耗為0.3dB/km, 接頭損耗為0.1dB/km，光連接器（收、發(fā)各一個(gè)）衰減為1dB，光纖色散系數(shù)≤1.8ps/nm?km, 光纖富余度為0.1dB/km。若考慮1dB色散代價(jià)（ε取0.306），5dB設(shè)備富余度，則當(dāng)損耗受限的最大中繼距離為40km時(shí)，系統(tǒng)所需的出纖功率為_(kāi)_________dBm；根據(jù)系統(tǒng)參數(shù)，色散受限中繼距離為_(kāi)_________。

A.0.1、136.6km B.1、80km C.0、136.6km D.10、80km 知識(shí)點(diǎn): 中繼距離計(jì)算 學(xué)生答[C;] 案: 得分: [20] 提示:

5.若一個(gè)2.5Gbit/s單模光纜通信系統(tǒng)，其系統(tǒng)總體要求如下： 系統(tǒng)中采用的激光器為單縱摸激光器，其閾值電流小于50mA，激光器工作于1550nm.光脈沖譜線寬度Δλ

max

標(biāo)準(zhǔn)答

B;

案:

試題分

20.0

值:

標(biāo)準(zhǔn)答

C;

案:

試題分

20.0

值:

≤1.8nm。發(fā)送光功率PT=2.5dBm。如用高性能的光接收組件，可在BER=1×10-10條件下得到接收靈敏度PR=-38dBm，動(dòng)態(tài)范圍D≥20dB。

若考慮光通道功率代價(jià)PP =1dB，光連接器衰減AC=1dB（發(fā)送和接收端各一個(gè)），光纖接頭損耗AS=0.1dB/km，光纖固有損耗α=0.23dB/km，光纖色散系數(shù)D≤2.2ps/(km?nm)取ME=3dB MC=0.1dB/km，頻率啁啾系數(shù)為3.2。試計(jì)算損耗受限中繼距離為_(kāi)_________，色散受限中繼距離為_(kāi)_________，則最大中繼距離為_(kāi)_________。

A.80km、74km、74km B.74km、67.5km、67.5km C.74km、67.5km、74km D.80km、675km、80km 知識(shí)點(diǎn): 中繼距離計(jì)算 學(xué)生答案: [D;] 得分: [20] 提示:

標(biāo)準(zhǔn)答

案:

試題分

值:

D;

20.0