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

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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

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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; /

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6. ______will conquer ______ nature.

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

C. Man; /      D. The men; the

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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

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

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

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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

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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

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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

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19.(09年山东理综·10)下列关于氯的说法正确的是

A.Cl2具有很强的氧化性,在化学反应中只能作氧化剂

B.若35 17Cl、37 17若Cl为不同的核素,有不同的化学性质学科

C.实验室制备Cl2,可用排放和食盐水集气法收集

D.1.12LCl2含有1.7NA个质子(NA 表示阿伏伽德罗常数)

答案:C

解析:本题以氯元素为载体,从氧化还原、原子结构、收集方法不同角度进行考查,体现了山东理综化学选择题的命题模式。氯气与水的反应既是氧化剂也是还原剂;同一元素的不同核素化学性质几乎完全相同而物理性质不同;D中提Cl2的体积未指明是标准状况。实验室制备Cl2,可用排饱和食盐水集气法收集也可用瓶口向上排空气法收集,故C正确。

20.(09年海南化学·8)下列叙述正确的是(用NA代表阿伏加德罗常数的值)

A.2.4g金属镁变为镁离子时失去的电子数为0.1NA

B.1molHCl气体中的粒子数与0.5 mo1/L盐酸中溶质粒子数相等

C.在标准状况下,22.4LCH4与18gH2O所含有的电子数均为10 NA

D.CO和N2为等电子体,22.4L的CO气体与lmol N2所含的电子数相等

答案:C 

解析:A中镁为0.1mol,失去的电子数为0.2 NA;B中盐酸无体积,不能计算出粒子数;D选项中使用气体摩尔体积不是在标准状况下。

21.(09年海南化学·11)在5mL 0.05 mo1/L的某金属氯化物溶液中,滴加0.1 mo1/L AgNO3溶液,生成沉淀质量与加入AgNO3溶液体积关系如图所示,则该氯化物中金属元素的化合价为:

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

答案:C 

解析:设氯化物化学式为MClx

MClx   --   x AgNO3

     1         x

5mL×0.05 mol·L-1    0.1 mol·L-1×7.5mL

x = 3

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