第一篇:高一化學寒假作業本(附答案)
高一化學寒假作業本(附答案)
1、從粗鹽中提取純凈的氯化鈉晶體的步驟為
2、配制一定物質的量濃度溶液的操作步驟為
3、設NA代表阿佛加德羅常數,下列說法正確的是 A.標準狀況下0.1 NA個水分子所占的體積約是2.24L B.11.2L CO2中含有11 NA個電子
C.NH3的摩爾質量等于NA個氨分子的質量之和 D.101k Pa、4℃時18mL水和202k Pa、27℃時32g O2所含分子數均為1NA 4.下列說法不正確的是 A.磷酸的摩爾質量與6.02×1023個磷酸分子的質量在數值上相等 B.6.02×1023個氮分子和6.02×l023個氫分子的質量比等于14:1 C.32g氧氣所含的原子數目為2×6.02×1023。D.常溫常壓下,0.5×6.02×1023個一氧化碳分子所占體積是11.2L 5.用NA表示阿伏加德羅常數,下列敘述中正確的是 A.0.1mol L-1稀硫酸100mL中含有硫酸根個數為0 1NA 點擊下載:
高一化學寒假作業本(附答案).doc 高中是人生中的關鍵階段,大家一定要好好把握高中,編輯老師為大家整理的高一化學寒假作業本,希望大家喜歡。
2016學年寒假假期百分百高一化學答案 2016高一化學寒假作業Word版含答案
第二篇:新課標寒假作業本答案
一.聽說:(第1-2節是聽力測試,第3-5節是口語測試)第一節:聽小對話,選擇正確圖片.(5分)()1.What does the woman want to drink?
()2.Where are they talking?
()3.What pet does Peter have?
()4.How does Emma go to school?
()5.Which is the right picture?
筆試部分(75分)二.單項選擇.(15分)()1.--Could you please sweep the floor?--_______.I have to do my homework.A.Yes, sure.B.Why not? C.Sorry, you can’t.D.Sorry, I can’t()2.--Jim, come out.Let's go to play football.--Sorry.I'm _______ a math problem.A.working out B.working on C.working for D.working with()3.Nancy, thanks for _________ care of my goldfish.A.take B.takes C.taking D.took()4.--Could I please ________________?--Sorry, you can’t.Your father has to use it.A.do chores B.go to the movies C.use the car D.go to school()5.--Would you like to come to my party?--I’d love to, ___________I’m too busy.A.and B.if C.so D.but()6.My mother often ___ my little sister ____ of the house and plays with her in the garden.A.take...out B.takes...out C.takes...to D.take…to()7.I _________ doing the dishes because it's boring.A.hates B.hate C.like D.likes()8.Could I ________ ten yuan from you? I will give it to you next week.A.borrow B.give C.send D.help()9.I often help my mother dinner.A.did B.do C.make D.makes()10.I could ________ my bed and ________ my clothes.A.make;fold B.make;do C.fold;do D.fold;wash()11.Could you please the window? It’s very cold.A.to open B.not to open C.opening D.not open()12.Mr Smith didn’t have money ,but he had good friends.A.much;much B.many;many C.much;many D.many;much()13.I ___________ my aunt in Australia this winter vacation.A.visit B.am going to visit C.visited D.was going to visit()14.When you can’t find the way, you may the police help.A.ask, for B.ask, to C.tell, with D.told, for()15.Please put the food in the fridge(冰箱), it may go bad.A.and B.for C.or D.so 三.完型填空.(10分)
Bill Gates ____1___on October 28, 1955.He grew up in Seattle, Washington.He was a very _____2___ boy.His favorite subjects at school were science and math.___3___ he was 13 years old, Bill started to play with computers.At that time, computers ___4___very large machines.Once he was very interested ___5____ a very old computer.He and some of his friends ___6___lots of time doing unusual things with it.In the end, they worked out(開發)a software program(軟件程)with the old machine.Bill ___7___it for $ 4200 when he was only 17.In 1973, Bill ____8___Harvard University.In his third year, he left Harvard to work for a company(公司)called Microsoft.Bill began his company in 1975 ___9__his friend Paul Allen.They thought the computer would come into every office and every home soon.So they began developing the software for personal computers: They improved the software to ___10__ it easier for people to use computers.()1.A.is born B.was born C.did born D.born()2.A.talented B.lucky C.loving D.shy()3.A.At B.Until C.When D.At the moment()4.A.is B.are C.was D.were()5.A.at B.in C.on D.for()6.A.took B.put C.paid D.spent()7.A.sell B.sale C.sold D.bought()8.A.went B.went to C.want D.wanted()9.A.and B.with C.for D.by()10.A.take B.begin C.make D.start 四.閱讀理解:(20分)
A
Betty is an American school girl.She is very happy because her parents will take her to China for a visit.They are going to fly from New York on June 30 and get to Beijing on July 1.They will stay at Lido Holiday Inn.Their Chinese friends will show them around Beijing.They are going to visit the Palace Museum, the Summer Palace, the Temple of Heaven and the Great Wall.They will also visit some Chinese homes and try some Chinese food.They will spend a week in Beijing and then go to Xi’an, Guilin and some other places for sightseeing.The whole trip will take three weeks and she is sure she will have a great time in China.()1.Betty is very happy because she will _______ with her parents.A.visit China B.go home C.watch TV()2.Their _______ friends will show them around Beijing.A.Australian B.Chinese C.American()3.From the text we can know that they will _______ in Beijing.A.cook Chinese food B.Learn to speak Chinese C.try some Chinese food()4.After they visit Beijing , they will go to ___________.A.Xi’an and Guilin B.The Summer Palace C.Shanghai()5.How long will the whole trip take?
A.one week B.two weeks C.three weeks B There is one language,people,young and old,men and women,use it very often,in every country in the world.It is everyone’s second language.You can’t hear it but it is very easy to understand.It is sign(手勢)language.
When you wave(招手)to a friend in the street,you are using sign language.When you put up your hand in class,you are saying“Please ask me,l think l know the right answer” When a police officer wants to stop cars or buses.he puts up his hand.He’s using sign language.Churchill’s(丘吉爾)famous“V for Victory(勝利)”is also sign language. Sign language is useful(有用的)in quiet places or places full of noise.Even when you are swimming with your friends,you can have a talk under water.()6.__________ in the world use sign language. A.Many people B.Police officer
C.All people D.Students and teachers()7.You can’t hear sign language because it’s ____________ language. A.a difficult B.not a C.an easy D.not a spoken()8.When you put up your hand in class,you mean ___________. A.you can answer the question B.you want to ask a question C.you can use sign language D.both A and B()9.In a noisy(吵鬧的)place the best way to talk is to ___________.
A.speak louder B.use sign language
C.speak in a low voice(小聲)D.stop noise()10.Which of the following is TRUE? _________.
A.To nod one’s head(點頭)isn’t sign language B.Only Churchill used“V for Victory” C.Teachers don’t know sign language D.People often use sign language 五.詞匯運用:(10分)
1.Can I use your CD player? ______________(我的)is at home.2.He has to take _____________(照顧)of his little sister.3.My brother often _______________(忘記)to make his bed
4.Mrs Black always________________(帶)her dog for a walk after supper.5.Could you please buy some _____________(小吃,快餐)for me? 6.I ______________(憎恨)thieves.7.What is your father doing? He’s having a ________________(會議).8.Yesterday Mary______________(邀請)me to her birthday party.9.I like to ______(洗)the dishes.10..________(青少年)need to help their parents with housework.六.任務型閱讀(5分)
下面有六段電視節目內容的解說詞。請把其中的五段,填入相應的節目名稱。A.People might grow plants and vegetables in the sea in about 50 years.B.A child in Hainan fell from the seventh floor but luckily he was not hurt at all.C.The lost world is an exciting American film.People, especially school students, may like it better.D.Even if you could buy the world, you could not buy a happy family, good friends or knowledge.E.For families with children, an important problem is getting the children away from the television to do their homework.F.When you need help for your homework, go to the library.You may find magazines, newspapers, and big dictionaries there.They can always help you.(1)-------Money Isn’t Everything
(2)-------Activities For Free Time
(3)-------Study Tools
(4)-------Farms of the Future
(5)-------Parents’ Headache 七.書面表達(15分):
這個周末你與父母去海濱度假,你的寵物小狗需要好友Ted幫忙照顧。請用下面的提示詞給Ted寫份留言。
take care of , take for a walk, feed and give some water, play with him, clean
第三篇:上學期高一化學寒假作業本(2018—2018)
上學期高一化學寒假作業本(2018—2018)
化學與人類進步和社會發展的關系非常密切,它的成就是社會文明的重要標志。查字典化學網為大家推薦了上學期高一化學寒假作業本,請大家仔細閱讀,希望你喜歡。
用到的相對原子質量:H : 1 O : 16 Al:27 S:32
(每個小題只有一個答案符合要求,請選出,每小題2分,共50分)
1.下列不屬于空氣污染物的是()
A.二氧化硫 B.氮的氧化物 C.粉塵 D.二氧化碳
2.、下列物質的分離方法不正確的是
A 用過濾的方法除去食鹽水中的泥沙 B 用分液法分離酒精和水
C 用四氯化碳萃取碘水中的碘 D用蒸餾的方法將自來水制成蒸餾水
3.常溫下,能用鐵制容器盛放的液體是()
A.稀鹽酸 B.稀硝酸 C.FeCl3溶液 D.濃H2SO4
4.下列物質中,不屬于合金的是()
A.硬鋁 B.水銀 C.黃銅 D.鋼鐵
5..賞心悅目的雕花玻璃是用下列物質中的一種對玻璃進行刻蝕而制成的,這種物質是()
A.氫氟酸 B.燒堿 C.鹽酸 D.硫酸
6.當光束通過下列分散系:①有塵埃的空氣 ②稀硫酸 ③蒸餾水 ④氫氧化鐵膠體,能觀察到有丁達爾現象的是()
A.①②B.②③ C.①④ D.②④
7.下列情況會對人體健康造成較大危害的是()
A 自來水中加入少量漂白粉進行消毒殺菌 B 用SO2漂白食品
C 用食醋清洗熱水瓶膽內壁附著的水垢 D 用小蘇打發酵面團作饅頭
8.下列說法或做法正確的是()
A CO2通入可溶性硅酸鹽中析出硅酸沉淀,所以硅酸的酸性小于碳酸
B 金屬鈉著火燃燒時,用二氧化碳滅火
C 氯氣與二氧化硫混合使用漂白效果更好 D 酸雨的PH小于7
9.鈉與水反應的現象和鈉的下列性質無關的是()
A.鈉的熔點較低 B.鈉的密度小于水
C.鈉的硬度較小D.鈉的還原性強
10.純堿和小蘇打都是白色晶體,在日常生活中都可以找到。若要在家中將它們區分開來,下面的方法中可行的是()
A.分別放在炒鍋中加熱,觀察是否有殘留固物
B.分別用干凈鐵絲蘸取樣品在煤氣爐的火焰上灼燒,觀察火焰顏色
C.觀察樣品的顏色
D.在水杯中各盛相同質量的樣品,分別加入等體積的白醋,觀察反應的劇烈程度
11.﹒銅粉加入稀鹽酸中,加熱無現象,這時加入一種鹽則銅粉溶解而溶液變藍,同時有氣體放出,這種鹽是()
A﹒NaCl B﹒FeCl2 C﹒KNO3D﹒Fe2(SO4)3
小編為大家提供的上學期高一化學寒假作業本,大家仔細閱讀了嗎?最后祝同學們學習進步。
第四篇:七年級寒假作業本答案(數學)
七年級寒假作業本答案(數學)
我們已給本學期劃上一個圓滿的句號,又迎來了豐富多彩的寒假生活。查字典數學網初中頻道為大家提供了七年級寒假作業本答案,供大家參考。
一、1、B
2、B
3、(1)(3)4、3
5、(1)x-62(2)a+b0
二、1、x3
2、x1.5
3、x-8/3 4、2x-4
5、C
6、C
7、(1)x6 數軸表示略(2)x-2 數軸表示略
8、(1)x2 數軸表示略(2)x-2.5 數軸表示略 9、23 數軸表示略
10、x3/11
三、操作探究(1)當x=2時,y=15,當x=-2時,y=3(2)-17/8-1.5(3)x-17/8
1、x1/2
2、(1)4000元(2)5種:①甲6,乙9;②甲7乙8;③甲8乙7;④甲9乙8;⑤甲10乙5(3)a=300,甲6乙9更有利
四、1、x280 2、137/18137/19 3、4.5km 操作探究(1)CB(2)RPQ 創新舞臺 當mn時,不答應;當m=n時,無所謂;當m
五、1、B
2、D
3、(1)a+ab(2)x+y(3)1(4)ac
4、(1)36a4^4b(注:4^4即4的4次方,以后不解釋)(2)x(x-9)
5、(1)5x-10y/2x-40(2)x-20/130x+24
6、(1)1/3x=4y/12xy,5/12xy=5x/12xy(2)y/x(x-y)=y-xy/x(y-x)x/(y-x)=x/x(y-x)創新舞臺-7,-7
六、1、-1 2、3
3、x 4-6 DAC
7、(1)2/xz(2)10/3a(a+2)操作探究 略
七、1、(1)x=0(3)x=0(第2問呢--)2、1/7 3、34
4、(1)③(2)不正確 應保留分母(3)-2x-6/(x+1)(x-1)創新舞臺 原式=x+4 ∵(-根號3)=(根號3),正確
八、1、m-6 2、5元 感悟體驗 略
九、1、y=50/x
2、略 3、2/3
4、m1/2
5、D
6、B
7、(1)y=-18/x(2)x=-6 創新舞臺 略
十、1-3 AAD
4、(1)S=100000/d(2)200m(3)6666.67m
十一、1、二 四
2、C
3、長10m 寬6m 創新展臺(1)30min(2)無效
十二、1、C
2、D
3、(1)1:10000000(2)1:10000000(3)單位換算
4、(1)1/2,1/4,1/2(2)AC,DB,CD,AB
5、(1)5/2(2)5/2
6、(1)8(2)略(提示:DB/AB=2/5,EC/AC=2/5 DB/AB=EC/AC)創新舞臺 32cm(不清楚2cm和0.5cm算不算,這題不同人不同理解,多寫應該也沒事--)
十三、基礎展現(1)盲區(2)不能。盲區(3)AB范圍內(4)略 感悟體驗 7.6m 操作探究 略
十四、1-3 CCD 4、2:1 1:2 5、12 6、1
7、(1)135 根號8(2)相似,理由略 操作探究 略
十五、1-3 CBC
4、ACP=ABC 5、2/5
6、(1)DE=AD,BE=AE=CE(2)△ADE∽△AEC(3)2 創新舞臺 略
十六、1、A
2、D
3、圖1 燈光 中心投影;圖2 陽光平行投影 4、6.40m 操作探(1)1.25(2)1.5625(3)y=d/4(4)0.4m
十七、全部作圖說理類題,略
十八、1、(1)(2)(3)
2、B
3、A
4、略 操作探究(1)提示:做PQ平行AC(2)不成立(3)PAC=APB+PBD
十九、1、C
2、C
3、=
4、不合理
5、不行
6、(1)正確(2)正確 操作探究(1)180(2)相等 三角形的外角等于不相鄰兩個內角和 三角形三個內角和為180創新舞臺 e d f
二十、1、C
2、CD
3、略(提示:連接AD)操作探究平行 理由略 創新舞臺 略(如:已知(1)、(2)、(4),求證(3))
二十一、1、B
2、C
3、不相同
4、不等 不中獎概率大
5、(1)摸到任意一個數字 相等(2)不等(3)相等 操作探究 落在紅色或綠色或黃色區域內 不等
二十二、1、(1)相等(2)不等 抽出王(3)相等 操作探究 問題一 不正確 紅球 p(紅)=2/3,p(白)=1/3,∵p(紅)p(白)摸出紅球可能性大 問題2 拿出一個紅球 感悟體驗 ①略 ②當ab牛奶杯中的豆漿多 當a=b牛奶杯中的豆漿和豆漿杯中的牛奶一樣多 當a
二十三、1、A 2、5/8 3、6/25
4、(1)1/4(2)略(感覺提議不太清晰,我寫2/5)5、7/8 1/8 操作探究(1)略(2)1/6
以上就是查字典數學網為大家提供的七年級寒假作業本答案,大家仔細閱讀了嗎?加油哦!
第五篇:六上寒假作業本答案
篇一:六年級寒假作業答案
六年級寒假作業答案——《寒假新時空》數學答案(持續更新)
2012-01-17 09:34:18| 分類: 易學簡算|舉報|字號 訂閱
2月7日晨修改,感謝部分同學指正!
p4-5 在框里填上適當的數
3/2
3/2 15/2;14/9 14/9 4/9 5/3
5/3 5/6 涂色
37.5% 37.5% 按規律填空
0.5
3/7,37.5%規律是:分子是3,分母后一個比前一個增加1 6/5,60%1.3 規律是:奇數位上減去0.1,偶數位上增加0.1 40%,1.4, 33/20 190% 規律是:后一項比前一項增加0.25 求面積1、10x12-3.14x(10/2)平方=41.5(平方厘米)2、4x6/2+3.14x(4/2)平方/2=18.28(平方厘米)
解決問題
1、(1/3
x 3/4-1/5)/ 3/10= 1/6
2、(1)(14+16)/(14+16+7+3+4+5+1)x 100%=60%(2)(14+16+7+3+4+5)/(14+16+7+3+4+5+1)x 100% =98% 1-1 /(14+16+7+3+4+5+1)x 100%=98 %(3)略
p10-11 直接寫出答案:3/2 2/3 2/9 8/9 7/4 4/7 3/7 5y1/3 13/15 3/2 5/3 4/15 看圖計算:略
填空:
1、100,402、1:33、270
4、1,3,2, 1/4, 3/2 選擇
a, b , a, b, b, b 動腦筋,1、3,28 ; 6,14; 21,4; 12,7 ; 42,2 4,21; 7,12, 2,42; 1,84
2、略
p16-17 1 > ,=,< 2 ac 31又2/3 >1.66>116.7% 34% > 40.75=3/4=75% 0.575=23/40=57.5% 0.333 0.34=17/50=34% 5 6 540x 44/44+45+46 =176(棵)
540x 45/44+45+46 =180(棵)540x 46/44+45+46 = 0.5=50%(3)(16/2)平方/2=100.48(平方厘米)
3.14x+ 6x6/2=32.13(平方分米)
p22-23 113, 1 ,48 20.75 75% 七成五
5/8 62.5% 3/5 60%、填>、<或=,< ,,、選擇
;b;c、比較大小 >
1/3、填表、略、解決問題(1)按比例分配 :=184(棵)(2)309 / 618
3.14 x(6/2)平方/2、簡便計算 1/24、填空 3/4
0.625 四種:
192=1/2(384)=1/3(576)273=1/2(546)=1/3(819)327=1/2(654)=1/3(981)219=1/2(438)=1/3(657)
3、填>、<或= <,>, >;< ,> =
4、列式計算
[3.09-
37/12 /(1.15+1/12)] x 10% 解:設乙數為x,那么甲數為4/7x x-4/7x=21 x=49
12000x3.14%x3+12000=13130.4(元)1200x(1聯系本站-站長統計 篇四:六上寒假作業答案
第一頁:
一、詮釋 莊稼 陶瓷 由衷 陌生 親吻
三、不恥下問 手不釋卷 孜孜不倦 博聞強識
閱讀:
答案:
1、以開玩笑的態度回答。/ 造就。/ 心情難以平靜。
2、(1)其形聲義俱全,信息量遠遠大于拼音文字。漢字又整齊又靈動,特別是適宜于表達一種微妙的、詩意的情感。
(2)古典詩詞已經規定了、鑄就了中國人的心理結構。
3、因為漢字其形聲義俱全,信息量大,適宜表達微妙、詩意的情感,聯結著久遠的文化底蘊,由漢字寫成的古典詩詞甚至鑄就了中國人的心理結構。而且使用漢字的人數眾多,占全世界人口的四分之一,因此,漢字是“不應該也不可能廢除”。
4、因為中國人自小受著中華古典文化的熏陶,心中有對祖國的深深熱愛之情,所以中國人的凝聚力會那么強。
第三頁:
韌勁 哺乳 羨慕 慷慨
寂靜
團錦簇 萬紫千紅 顧名思義 司空見慣
老班長許諾不投他得票請每人一個雪糕
讓老師最頭疼的人當班長
書呆子被
選為文藝委員
班干部。
蠢決定而傷心(3)【1】傷了王威的心
第6頁:
酸棗 衰老 艱苦卓絕
過濾 辜負 嬉戲
笑臉
溫文爾雅
一、殲滅
玻璃
二、偉大 簡陋
三、直截了當 花
四、3 5 2 4 6 1 閱讀答案: 1(1)(2)【1】有人選【2】默不作聲的2繁重 居然 3(1)沒人想當(2)為自己的愚
一、恬靜
餐館
二、活潑
慷慨
四、張開了美麗的像一盞盞小燈籠。