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【单选题】
DNA复制时以序列5’T pApGpAp-3’为模板合成的互补结构是A.
5’—pTpCpTpA-3’
B.
5’—pApTpCpT-3’
C.
5’—pUpCpUpA-3’
D.
5’——pGpApCpA-3
E.
3’—pTpCpTpA-5’
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举一反三
【单选题】Questions 22 to 25 are based on the following passage. 25.
A.
To make surgeries and operations less painful for the patient.
B.
To decrease the number of nurses needed.
C.
To give doctors more free time.
D.
To make surgeries and operations more successful.
【简答题】Questions 22～25 are based on the following monologue on smoking． 第 22 题 Why are so many people dependent on cigarette?
【单选题】Questions 22 to 25 are based on the following passage. 22.
A.
To make our lives stressful.
B.
To make our lives complicated.
C.
To make our lives easier.
D.
To make our lives harder.
【单选题】Questions 22 to 25 are based on the passage you have just heard Questions 22
A.
I t is a bit difficult to learn
B.
It was popular in New Zealand.
C.
It is a traditional type of ballet.
D.
It evolved in the mid-1970s.
【简答题】questions 22 to 25are based on the third passage
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