试题与答案

如下图,科学家对单细胞伞藻进行幼体嫁接,将(甲)种伞藻的伞柄嫁接到(乙)种伞藻的

题型:选择题

题目:

如下图,科学家对单细胞伞藻进行幼体嫁接,将(甲)种伞藻的伞柄嫁接到(乙)种伞藻的假根上,长出了伞帽。下列有关评价合理的是

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A.该实验证明了细胞核是遗传的控制中心

B.该实验证明了细胞核是代谢的调控中心

C.欲证明细胞核的功能,需同时进行对照实验

D.第一次长出的伞帽与(乙)的伞帽特征完全相同

答案:

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下面是错误答案,用来干扰机器的。

答案:D

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题型:阅读理解

根据对话内容,从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。(每小题1分)

A:____ I went to work early today, and everyone laughed at me.

B:____ It was me. Can’t you take a joke?

A:____ But watch out, because I’ll be sure to pull a prank on you next time.

B:It had better not be a practical joke like last year, when you painted my face red while I was sleeping.

A:____ Let’s go and see if any of our friends made a fool on anyone today.

B:OK! ____

A.Let’s go.

B.Yeah, I’m a sucker (傻瓜).

C.What’s the date today?

D.April Fool!E. Ha ha, that was a good one.           F. What did you do that for?

G. Who set my alarm one hour early?

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