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【单选题】
关于碱解法分离质粒 DNA ,下面哪一种说法不正确A.
溶液 I 的作用是悬浮菌体
B.
溶液 Ⅱ 的作用是使 DNA 变性
C.
溶液 Ⅲ 的作用是使 DNA 复性
D.
质粒 DNA 分子小，所以没有变性，染色体变性后不能复性
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举一反三
【简答题】You can get _________ a lot using email instead of face-to-face meetings because it's easier to make excuses when no one can see you.
【单选题】It's much easier to make friends ________ you have similar interests.
A.
unless
B.
when
C.
even though
D.
so that
【单选题】On seeing the star, all the students got_____
A.
excitedly
B.
excited
C.
excitement
D.
exciting
【简答题】It's easier to make friends when you have similar _______.
【判断题】Seeing the students were not interested, the Professor ended the seminar.
A.
正确
B.
错误
【单选题】Seeing his students complete the performance successfully in the competition, the teacher nodded .
A.
in relief
B.
in surprise
C.
in peace
D.
in doubt
相关题目：
【单选题】On seeing the star, all the students got_____
A.
excitedly
B.
excited
C.
excitement
D.
exciting
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