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27.China won Olympic gold in the women's short track 3,000 metres relay on Wednesday, with Canada ____ the silver.

    A.picking up       B.taking up     C.looking up       D.bringing up

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26. _____ in the regulations that you should not tell other people the password of your e-mail account.

A. What is required  B. What requires      C. It is required     D. It requires

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25. The conference has been held to discuss the effects of tourism ______ the wildlife in the area.

A. to             B. on              C. at               D. with

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24. I’ve already told you that I’m going to buy it, ________.

A. how much does it cost                B. no matter how it costs

C. however does it cost much             D. however much it costs

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23.As high school students, it’s very important to keep ourselves ______ of what’s happening home and abroad every day.

    A.to inform        B.informing   C.informed         D.be informed

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22.In order to protect the environment, supermarkets and stores are forbidden to ______ free plastic bags to shoppers..

  A. put away   B put off  C. give off   D. give away

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第一节:单项填空(共l5小题;每小题l分,满分l5分)

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

21. Believing that everyone can make _____ world _____ better place on a daily basis, Tom plays his part in helping others.

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

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53.(10分)下图为胚胎移植的基本程序、早期胚胎发育过程(图甲),及经过体外受精和胚胎分割移植培育优质奶牛的过程(图乙)。请回答下列问题:

                    (图甲)

              (图乙)

(1)超数排卵技术的处理措施是对供体母牛注射         激素。冲卵实质上是用特定装置将供体母牛子宫内的         冲洗出来。

(2)图乙中②指的是        。进行胚胎分割时,应选择发育到       时期的胚进行操作。

(3)图甲中标号3为       ,它将来可发育为      

(4)图乙中A细胞是    ,在进行体外受精前要对精子进行    处理。

(5)哺乳动物受精过程有哪些机制阻止多精子入卵受精?(   )

A.顶体反应      B.精子穿越卵子透明带触及卵黄膜,导致透明带反应

C.精子触发卵黄膜表面微绒毛的抱合反应   D.精子入卵后,触发卵黄膜封闭作用

(6)对囊胚阶段的胚胎分割时应注意      ,以免影响胚胎恢复和发育。

季延中学 09-10学年 高二下期末考试 

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