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【简答题】
用所给词的适当形式填空。 1. This was his _____ (two) time to cook. 2. It's hard for me_____ (drive)a car. 3. Mark is a _____ (Russia) and he lives in Russia all his life. 4. She doesn't have any _____ (hobby). But she likes studying very much. 5. I hear some _____ (foreign) will visit our school next week.
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【单选题】下列有关调节基因的论述,哪个是对的?
A.
调节基因是操纵子的组成部分
B.
是编码调节蛋白的基因
C.
各种操纵子的调节基因都与启动基因相邻
D.
调节基因的表达受操纵子的控制
【简答题】无烟煤又称（）或（），是煤化程度最高的一种煤，因其燃烧时无黑烟而称无烟煤。
【单选题】I’ll give the note to her _________ she comes back.
A.
until
B.
as soon as
C.
before
D.
Since
【单选题】— I think I'll give Bob a ring. — You _____. You haven't been in touch with him for ages. [ ]
A.
will
B.
may
C.
have to
D.
should
【单选题】A:I’m going downtown、 B:Come on、( ).
A.
I’ll give you a lift
B.
You’re welcome
C.
Don’t do that
D.
Come with me
【单选题】下列有关调节基因的论述,哪个正确( )。
A.
调节基因是操纵子的组成部分
B.
是编码调节蛋白的基因
C.
各种操纵子的调节基因都与启动基因相邻
D.
调节基因的表达受操纵子的控制
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