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问题 单项选择题

色盲男性的一个次级精母细胞处于着丝点刚分开时，该细胞可能存在（）

A.两条Y染色体，两个色盲基因

B.一条X染色体，一个色盲基因

C.两条X染色体，两个色盲基因

D.一条Y染色体，没有色盲基因

答案

参考答案：C

填空题

根据句意，将下面的单词补充完整，每空一个字母。

1. There will be less p __ __ __ __ __ __ __ __ in Beijing in 2008.

2. Where do you live? I live in an a __ __ __ __ __ __ __ __.

3. I need some money to by a g __ __ __ for my friend. Tomorrow is his birthday.

4. My friend wears the same c __ __ __ __ __ and has the same haircut as I do.

5. The boy was walking down the street w__ __ __ the UFO landed.

6. I saw an a __ __ __ __ walking out of the UFO last night.

7. Marcia was hungry. Lana said she would b__ __ __ __ some drinks and snacks to Marcia's house.

8. Mary has been to many countries. She said she could s __ __ __ __ three languages.

9. Yao Ming is a f__ __ __ __ __ basketball player.

10. If the students watch a v __ __ __ __ at the party, they will be bored. Because it is very boring.

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单项选择题

以下不属于标准作业文件的是（）

A.工位能力表

B.山积表

C.标准作业组合表

D.标准作业指导书
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