从同一个体的浆细胞（L）和胰岛B细胞（P）分别提取它们的全部mRNA（L-mRNA和

发布时间：2017-06-02 23:35 │ 来源：www.tikuol.com

题型：单项选择题

问题：

从同一个体的浆细胞（L）和胰岛B细胞（P）分别提取它们的全部mRNA（L-mRNA和P-mRNA），并以此为模板在逆转录酶的催化下合成相应的单链DNA（L-cDNA和P-cDNA）。其中，能与L-cDNA互补的P-mRNA以及不能与P-cDNA互补的L-mRNA分别含有编码（）

①核糖体蛋白的mRNA

②胰岛素的mRNA

③抗体蛋白的mRNA

④血红蛋白的mRNA

A.①③

B.①④

C.②③

D.②④

考点：普通高考文科综合 2016年高考生物答案上海卷_2016年高考生物试题及答案

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完形填空。

     Once a big horse and a small donkey were traveling together, carrying many things on their backs for
their owner. The horse was very strong,   1   he carried as heavy as the donkey.
     The donkey was able to keep up with the big horse in the 2 . But after a while, the donkey began to
feel too 3 to keep up any more.
     So the donkey asked the horse, "Brother Horse, could you please help me? I am afraid I  4 go on carrying
as heavy as you do." "No, you carry yours. I carry  5 . It is not my problem that you are not as big and
strong as me," answered the horse, feeling very  6 that he was stronger.
     Not long after that, the donkey finally  7 to the ground and died.
     Their owner moved what the donkey carried  8 the back of the horse. The horse had to  9   the double
load for the rest of the journey. He now knew he should have helped the donkey out. That way  10  the
donkey could carry something. The horse was sorry for being too selfish, but it was too late.

( )1. A. though
(     )2. A. end
(     )3. A. tired
(     )4. A. should
(     )5. A. yours
(     )6. A. proud
( )7. A. broke down
( )8. A. off
( )9. A. drop
( )10. A. at first

B. so
B. beginning
B. lazy
B. can’t
B. his
B. afraid
B. fell behind
B. onto
B. fetch
B. at once

C. because
C. middle
C. sick
C. have to
C. mine
C. nervous
C. fell down
C. from
C. catch
C. at least

D. but
D. front
D. worried
D. needn’t
D. ours
D. shy
D. set off
D. up
D. carry
D. at most

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在处理RTS系统B231报文时，将本行“业务编号”（如：票据托收业务“TCxxx、Cxxx”，贸易结算业务“BPxxx”等我行内部业务编号）输入（）栏位内，“国外业务行编号”和“其他编号”栏位内输入一个“0”。

A、国外账户行编号

B、国外账户行记账编号

C、国外业务行编号

D、其他编号

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