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
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
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
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
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
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
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
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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