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【单选题】
下列关于RNA和DNA聚合酶的叙述哪一项是正确的A.
RNA 聚合酶用三磷酸核苷合成多核苷酸链
B.
RNA 聚合酶需要引物，并在延长链的 5′ 端加接碱基
C.
DNA 聚合酶可在链的两端加接核苷酸
D.
NA 仅能以 RNA 为模板合成 DNA
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反馈参考答案：
举一反三
【简答题】一辆汽车以15m/s的速度正对山崖行驶，鸣笛后2s听到回声， 问：（1）鸣笛处距山崖离多远？ （2）听到回声时，距山崖多远？
【简答题】（2）车头时距=（ ）s/辆
【简答题】时距判定法
【单选题】Which of the following is true of words according to the passage?
A.
Their power is beyond imagination.
B.
They enable people to live longer and read more.
C.
They remind people of their past experience.
D.
They last longer than signs or sounds.
【简答题】时距扩大法
【单选题】Which of the following words are NOT spoken as the last words by Belcher?
A.
"I never could make out what duty was myself."
B.
"You and me are chums. You won't come over to my side, so I'll come over to your side."
C.
"I think you're all good lads, if that's what you mean. I'm not complaining."
D.
"I likes the feelin' of a 'ome (as you may 'ave noticed) but I couldn't start again after that."
【多选题】Which of the following words have the /i:/ sound?
A.
feather
B.
believe
C.
receive
D.
very
E.
sit
【单选题】Which of the following used historical analysis and philology (i.e., the tracing out of the development of the usage of words) to “desanctify” the study of law?
A.
Commentators.
B.
Glossators.
C.
Humanists.
D.
Naturalists.
E.
Pandectists.
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