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27.The theory is true _______ the hotter a body is, the more energy it gives off.

A.that             B.when         which        D.what

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26.The desks and seats can be ________ to the height of any child.

A.devoted          B.adjusted      accustomed       D.adopted

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25.-I saw Tom drinking alone just now.

    -But as far as I know, he ________ little.

    A.drinks            B.is drinking     has drunk         D.had drunk

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24.The teacher suggested we do the exercises with great ________ though they were easy.

A.expectation       B.caution       ambition          D.assumption

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23.When it comes to repairing refrigerators, Paul is superior ________ Bob.

A.on              B.at           by              D.to

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22.He’s _______ to fail the exam if he doesn’t do any revision.

   A.bound           B.fit           about            D.easy

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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.- So she told you you’d got the job?

- ________, but she said they were impressed with me.

A.Not really                       B.Not particularly

 Not exactly                      D.Not specially

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45.(10分)下图为哺乳动物的胚胎干细胞及其分化的示意图。请回答:

(1)胚胎干细胞是从动物胚胎发育至_________期的内细胞团或胎儿的_____中分离得到的一类细胞。

  (2)图中分化程度最低的干细胞是______。在体外培养条件下,培养液中加入___因子,可诱导该种干细胞向不同类型的组织细胞分化。

(3)某患者不能产生正常的白细胞,通过骨髓移植可以达到治疗的目的,骨髓的治疗的实质是将上图的______________细胞移植到患者体内。

(4)若要克隆某种哺乳动物,从理论上分析,上述红细胞、白细胞神经细胞中不能选用作为供体的细胞是成熟的___________,其原因是___________。

(5)若某药物可抑制肝肿瘤细胞NDA的复制,使用该药物可使肝肿瘤细胞停留在细胞周期的______________期。

  (6)在制备单克隆抗体过程中的细胞融合阶段,用__________细胞与骨髓细胞融合,经过多次筛选最终得到能分泌__________________的杂交瘤细胞。

2009-2010学年度第二学期期末考试

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