真核生物与原核生物在DNA复制中的相同之处是
A. 引物长度较短
B. 冈崎片段长度短
C. 合成方向自5′→3′
D. 有多个复制起始点
E. DNA复制的速度较慢(50nt/s)
将细菌培养在含有放射性物质的培养液中,使双链都带有标记,然后使之在不含标记物的培养液中生长三代,其结果是
A. 第一代细菌的DNA都带有标记
B. 第二代细菌的DNA都带有标记
C. 不出现两股链都带标记的子代细菌
D. 第三代多数细菌的DNA不带有标记
E. 其余选项都不对
Which of the following underlined parts modifies an adverb?
A. That's quite a story.
B. There's the house, right in front of you.
C. She cooks well enough.
D. There were quite a lot of people at his party.
When the sentence "Would you mind moving your case?" is turned into indirect speech, which of the following is most appropriate?
A. He allowed me to move my case.
B. He offer to move my case.
C. He asked me to move my case.
D. He suggested moving my case.
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