0  433731  433739  433745  433749  433755  433757  433761  433767  433769  433775  433781  433785  433787  433791  433797  433799  433805  433809  433811  433815  433817  433821  433823  433825  433826  433827  433829  433830  433831  433833  433835  433839  433841  433845  433847  433851  433857  433859  433865  433869  433871  433875  433881  433887  433889  433895  433899  433901  433907  433911  433917  433925  447090 

9. _____ friend of my sister’s will come to see her tomorrow. I’m wondering what _____ man he is going to be like.

  A. A; the  B. A; a  C. The; a  D. The; the

試題詳情

8. You made the same mistake for _____ second time, dropping _____ “n” in the word “government”.

  A. a; the  B. a; a  C. the; an  D. a; an

試題詳情

7. ---- The news is spreading from mouth to mouth.

  ---- Yes, it’s become _____ talk of _____ town.

  A. a; a  B. the; /  C. the; the  D. a; /

試題詳情

6. ______will conquer ______ nature.

  A. The man; /     B. A man; the

C. Man; /      D. The men; the

試題詳情

5. His brother likes ______ history very much. He knows a lot about ______Chinese history, especially ______history of social development.

A. /; / ; the       B. / ; the ; /

C. the ; / ; /  D. the ; / ; the

試題詳情

4. To tell you ______ truth, he is not _____ John I know before.

A. the; the   B. a; a  C. a ; the  D. /; a

試題詳情

3. He is _____ honest man and now he is living in Belgium, _____ European country.

  A. an; an  B. a; an  C. an; a  D. an; the

試題詳情

2. Let us suppose that you are in____ position of____ parent. Would you allow your child to do such a thing?

A. a; a   B. a; the  C. the; a  D. the; the

試題詳情

1. As is known to us all, _________ tiger is in _________ danger of becoming extinct.

A. the, a  B. the, 不填  C. a,不填   D. 不填,the

試題詳情

19.(09年山東理綜·10)下列關(guān)于氯的說(shuō)法正確的是

A.Cl2具有很強(qiáng)的氧化性,在化學(xué)反應(yīng)中只能作氧化劑

B.若35 17Cl、37 17若Cl為不同的核素,有不同的化學(xué)性質(zhì)學(xué)科

C.實(shí)驗(yàn)室制備Cl2,可用排放和食鹽水集氣法收集

D.1.12LCl2含有1.7NA個(gè)質(zhì)子(NA 表示阿伏伽德羅常數(shù))

答案:C

解析:本題以氯元素為載體,從氧化還原、原子結(jié)構(gòu)、收集方法不同角度進(jìn)行考查,體現(xiàn)了山東理綜化學(xué)選擇題的命題模式。氯氣與水的反應(yīng)既是氧化劑也是還原劑;同一元素的不同核素化學(xué)性質(zhì)幾乎完全相同而物理性質(zhì)不同;D中提Cl2的體積未指明是標(biāo)準(zhǔn)狀況。實(shí)驗(yàn)室制備Cl2,可用排飽和食鹽水集氣法收集也可用瓶口向上排空氣法收集,故C正確。

20.(09年海南化學(xué)·8)下列敘述正確的是(用NA代表阿伏加德羅常數(shù)的值)

A.2.4g金屬鎂變?yōu)殒V離子時(shí)失去的電子數(shù)為0.1NA

B.1molHCl氣體中的粒子數(shù)與0.5 mo1/L鹽酸中溶質(zhì)粒子數(shù)相等

C.在標(biāo)準(zhǔn)狀況下,22.4LCH4與18gH2O所含有的電子數(shù)均為10 NA

D.CO和N2為等電子體,22.4L的CO氣體與lmol N2所含的電子數(shù)相等

答案:C 

解析:A中鎂為0.1mol,失去的電子數(shù)為0.2 NA;B中鹽酸無(wú)體積,不能計(jì)算出粒子數(shù);D選項(xiàng)中使用氣體摩爾體積不是在標(biāo)準(zhǔn)狀況下。

21.(09年海南化學(xué)·11)在5mL 0.05 mo1/L的某金屬氯化物溶液中,滴加0.1 mo1/L AgNO3溶液,生成沉淀質(zhì)量與加入AgNO3溶液體積關(guān)系如圖所示,則該氯化物中金屬元素的化合價(jià)為:

A.+1           B.+2            C.+3            D.+4

答案:C 

解析:設(shè)氯化物化學(xué)式為MClx

MClx   --   x AgNO3

     1         x

5mL×0.05 mol·L-1    0.1 mol·L-1×7.5mL

x = 3

試題詳情


同步練習(xí)冊(cè)答案