0  387417  387425  387431  387435  387441  387443  387447  387453  387455  387461  387467  387471  387473  387477  387483  387485  387491  387495  387497  387501  387503  387507  387509  387511  387512  387513  387515  387516  387517  387519  387521  387525  387527  387531  387533  387537  387543  387545  387551  387555  387557  387561  387567  387573  387575  387581  387585  387587  387593  387597  387603  387611  447090 

27. The colors on the national flags can be ______ differently in different cultures, but they have one thing in common, that is, ______of the colors was carefully chosen.

  A. translated; every                    B. explained either   

C. represented; all                     D. interpreted; each

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26. I always have so many things to____ when I come back to the company after a trip abroad.

A cater to        B contribute to           C attend to      D appeal to

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25. Cars play an important role in modern life, but they ______ also cause many problems like air pollution.

A. should               B. can              C. must         D. will

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24. Some old people don’t like pop songs because they can’t _____so much noise

A. concern           B. tolerate           C. undertake      D. ignore

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23. She is well thought of by all her workmates because she is ______ towards others.

    A. considerate       B. arbitrary        C. conservative    D. straightforward

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22. -What did the professor ask us to do just now?

  -Sorry, I     about my trip to the Wolf Hill at the weekend.

    A. had thought           B. thought         C. think        D. was thinking

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第一节:单项填空(共15小题;每小题1分,满分15分)

从A、B、C、D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。

21. Without _____thorough understanding of China’s specific conditions, you can’t have ______ say over the only-child policy.

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

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28.(9分)

     向体积为10 L的固定密闭容器中通入3 mol X气体,在一定温度下发生如下反应:

2X(g)    Y(g)+3Z(g)

  (1)经5min后反应达到平衡Ⅰ,此时测得容器内的压强为起始时的1.2倍,则且Y表示的反应速率为     mol/(L·min);

  (2)若上述反应在甲、乙、丙、丁四个同样的密闭容器中进行,在同一段时间内测得容器内反应速率分别为:甲:丙:。若其它条件下同,温度不同,则温度由高到低的顺序是(填序号)          

  (3)若向Ⅰ的平衡体系中充入氮气,则平衡    (填“向左”或“向右”或“不”)移动;若将Ⅰ的平衡体系中部分混合气体移走,则平衡     (填“向左”或“向右”或“不”)移动;

  (4)若在相同条件下向Ⅰ的平衡体系中再充入0.5 mol X气体,则原平衡Ⅰ中X的转化率与重新平衡后X的转化率相比较    (选填字母)。

A.无法确定                         B.前者一定大于后者

C.前者一定等于后者                D.前者一定小于后者

  (5)若保持温度不变,起始时加入X、Y、Z物质的量分别为a mol、b mol、c mol,达到平衡时各气体体积分数与Ⅰ平衡相同,且起始时维持化学反应向逆反应方向进行。则c的取值范围应该为      

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