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【单选题】
:天文单位的定义是A.
相对日地为一个角秒的天体的距离
B.
光线一年时间里传播的距离
C.
地球到太阳的平均距离
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举一反三
【单选题】I can think of many cases ______ students can’t write a good article though having a large vocabulary.
A.
where
B.
which
C.
that
D.
to which
【简答题】发酵工程主要包括___________,___________,__________,__________和_____________等内容。
【单选题】听力原文：W: You don't look too happy. What's the problem? M: Well, I've got to write a composition for my English class, and I just can't come up with any idea, and it's due tomorrow. Q: What is the man's...
A.
He hasn' t decided on a topic for his composition.
B.
He has fallen behind others in English class.
C.
He hasn't made up his mind as to what to write about.
D.
The book he borrowed will be due tomorrow.
【单选题】听力原文：W: You don't look too happy. What's the problem? M: Well, I've got to write a composition for my English class, and I just can't come up with any idea, and it's due tomorrow. Q: What is the man's...
A.
He has to change the topic for his composition.
B.
He has fallen behind others in English class.
C.
He hasn't made up his mind as to what to write about.
D.
The book he borrowed will be due tomorrow.
【简答题】发酵工程中游技术是指发酵过程控制主要包括( )、( )、( )。
【简答题】生物技术主要包括：( ) A: 基因工程 B: 酶工程 C: 发酵工程 D: 细胞工程
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