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27. So suddenly ________ the disease that the whole family were at a great loss.

  A. did he catch             B. he caught            C. was he caught        D. he was caught

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26. How hard the swimmers work now will _________ how they will perform in the 30th London Olympics.

  A. determine              B. decide               C. assume              D. forecast

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25. A certain number of tourists _________ complaining about the high accommodation price during the last month.

  A. is                      B. are                  C. has been             D. have been

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24. Whatever she says, _________ is often the case, you shouldn’t take too seriously.

  A. it                     B. what                 C. which                D. as

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23. I have been absent for nearly half a month. I can’t afford_________ week.

  A. the other               B. another              C. other                D. a more

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22. You can’t get the car back by Friday. It’s right_________.

  A. under construction      B. beyond repair         C. out of date           D. on the check list

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第一节  语法与词汇知识 (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。

例:Mr. Smith owns________ collection of coins than anyone else I have ever met.

A. larger          B. a larger          C. the larger           D. large

答案是B

21. -It is wise of parents to teach their children how to behave in company.

  -_________.

  A. Most likely              B. For sure              C. Exactly not           D. No problem

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49、(10分)下图图1是某二倍体雄性生物细胞正在分裂的示意图,图2表示该生物一个细胞连续变化过程中的染色体相对量的变化曲线。请据图回答:

图1
 
图2
 
 

(1)图1的细胞处在           分裂     时期,图2中染色体数量与该细胞中相同的时段是          。该细胞分裂结束后产生的子细胞含有    对同源染色体,基因型是                

(2)该生物体细胞中,最多有    条染色体。    

(2)图2中16时发生了      作用。表示细胞进行有丝分裂的时段是       。9-10时段细胞中染色体发生的主要变化是                     ,染色体的着丝粒在      处分裂。

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