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1.下列有关真核细胞分裂的叙述,正确的是

A.在减数第二次分裂前期不含染色单体

B.在细胞分裂间期,DNA复制,染色体数目加倍

C.在减数第一次分裂的前期和后期均可能发生基因重组

D.处于有丝分裂后期的果蝇体细胞有两个染色体组

答案:C(细胞分裂间期,DNA虽然发生复制,但着丝点没有分开,故染色体数目不变;果蝇是二倍体生物,其体细胞中有两个染色体组,细胞有丝分裂后期有四个染色体组;在减数第一次分裂的前期同源染色体上的非姐妹染色单体之间可发生互换,后期非同源染色体自由组合均可能发生基因重组;减数第二次分裂前期每条染色体上含有染色单体。)

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35. - Have you played baseball before? We need one more player.

-    .I like ball games, so I believe it will be fun to learn baseball.

A. Sometimes    B. Not really      C. Never mind    D. That’s cool

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34. Many buildings in the city need repairing, but the one   first is the library.

A. repaired      B. being repaired    C. repairing     D. to be repaired

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33. At the meeting place of the Yangtze River and Jialing River   , one of the largest cities in China.

A. lies Chongqing   B. Chongqing lies    C. does lie Chongqing  D. does l Chongqing lie

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32. Today, we will begin   we stopped yesterday so that no point will be left out.

A. when       B. where        C. how       D. what

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31.- Why do you want to work for our company?

-This is the job that I   for.

A. looked      B. am to look     C. had looked    D. have been looking

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30. The news shocked the public,   to great concern about students’ safety at school.

A. having led     B. led        C. leading     D. to lead

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29. The palace caught fires three times in the last century, and little of the original building  now.

A. remains      B. is remained      C. is remaining   D. has been remained

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28. In China, the number of cities increasing   development is recognized across the world.

A. where       B. which       C. whose     D. that

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27. Everything comes with    price; there is no such   thing as free lunch in the world.

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

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