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8. ---Has your former classmate come back from America?

---Yes, he _______ there for eight years.

A. has stayed       B. stays         C. stayed        D. had stayed

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7. Luckily, the black box, ______ to record the flight data, was soon found. 

A. being designed    B. designing      C. to design      D. designed

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6. One of the consequences of our planet’s being warming up is a(n) ______ in the number of natural disasters.

  A. account         B. reason        C. increase       D. occurrence

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5. I ______ a training course in Hangzhou to study English in the coming summer vacation.

  A. will have taken    B. have taken     C. will be taking   D. take

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4. ---I can’t imagine that great destruction was made to the city by the snowstorm.

  ---______.

  A. Nor am I           B. So do I        C. Me, too       D. Me, neither

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3. We would join them in the dress-up party ______.

  A. whether they invite us             B. shall they invite us 

C. if they invite us                 D. should they invite us

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2. If I can help ______, I don’t like working too late into the night.

  A. so             B. that          C. it            D. them

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第一节:单项填空(共20小题;每小题0.5分,满分10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,并在答题卡上将该选项标号涂黑。

1. Some researchers point out that ______ daydreaming is ______ means of relaxation.

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

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8、已知下列反应:①NH3+H+NH4+  ②Ag++2NH3Ag(NH3)2+  ③Ag++Cl-AgCl   前者都比后者更容易发生。下列事实或现象预期正确的是(   )

A.氯化银可溶于氨水             B.银氨溶液中加入少量氯化钠有白色沉淀

C.银氨溶液中加入盐酸有白色沉淀       D.银氨溶液可在酸性条件下稳定存在

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7、NA表示阿伏加德罗常数,下列各组物质在一定条件下充分反应后,生成气体物质的分子数可能大于或等于NA的是(   )

A.400mL10 mol·L-1的浓盐酸与足量的MnO2反应

B.2molCu与200g98%的浓硫酸反应

C.65gZn与足量的硝酸反应

D.H2O(g)和CO2混合气体2mol与足量的Na2O2反应

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