26. In order to continue to learn by ourselves after leaving school, we must ______ learn how to study in the school now .
A. after all B. in all C. above all D. first of all
25. The job is great in terms of salary . It has its disadvantages, _______ .
A. though B. however C. even D. therefore
24. ______ it is hoped that college students should be equipped with the ability to take a good set of notes, this is not always the case.
A. When B. While C. As D. Unless
23. The child should be punished. You shouldn’t let him ______ telling lies.
A. keep away from B. keep away with
C. get away from D. get away with
22. Susan was just _____ at those pigeons at the time, so I don’t think she saw me.
A. spotting B. watching C. glaring D. staring
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。
21. ------Mum,can I go out to play with Tom for just a while ?
------ _______ and do what you like.
A. No way B. Go ahead C. It depends D. Don’t worry
38.(9分)下图为牛胚胎移植的基本程序,请据图回答:
![]()
(1)图中a、b、c过程分别是指____________、________________、 __________。
(2)在胚胎移植过程中,供、受体母牛选择好后,要用________激素进行同期发情处理,这样处理的原因是_____________________________________________________,(2分)以保证移植的胚胎能够继续正常发育。
(3)为了提高牛胚胎的利用率,常采取的方法是__________;处理的时期是 ________
________
(4)从哺乳动物早期胚胎或原始性腺中分离出来的细胞,称为ES或EK细胞。这类细胞的形态特征有______________________。
37.
(15分)如右图为细胞融合的简略过程,请据图回答:
⑴ 若A、B是植物细胞,在细胞融合之前已用_______处理,除去了_____;A、B到细胞C的过程中,常用的物理方法是_______。
⑵ 若A、B是植物细胞,则形成的D细胞还要应用_______技术把D培养成植株。
⑶ 若A、B是动物细胞,一般取自_________,然后用________,使其分散开来,A、B到C的过程中,常用的不用于植物细胞的手段是_____,所形成的D称为______________。
⑷ 若该过程是制备单克隆抗体,A为小鼠,B为淋巴细胞。那么,在获得此细胞之前,小鼠已被注射了______。注射后小鼠身体产生了相应的_______。图中B为__________。
⑸ 若该过程仍是制备单克隆抗体,在A、B到C的过程中,所形成的C有_____种,用来培养的D细胞应该是____。从中选择出它的方法是____培养。获得D后,常用的培养方法是________。
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