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【单选题】
分子模型技术是研究____结构的有效手段A.
一维
B.
二维
C.
三维
D.
四维
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反馈参考答案：
举一反三
【多选题】结构相对指标( )。
A.
可以反映总体的内部构成
B.
是总体的某一部分数值占总体数值的比重
C.
总体各部分的结构相对数之和等于100%
D.
总体各个部分的结构相对数大于0，小于100%
【简答题】阅读理解。 Dear Amy, I couldn't read your two e-mails until today because my computer was broken. I'm sorry to hear about your problem, but I'm glad you're feeling better and are recovering (康复). I'm surpr...
【简答题】用括号里所给单词的适当形式填空。 1. There _____ (be) a ruler and two pencils in the pencil-case. 2. I have five _____ (photo) of my friend at home. 3. That is _____ (Daming) mother. Let's go and say...
【简答题】结构相对指标的作用。
【单选题】听力原文：W: Don, I hear you bought a new car. M: I did just buy a car, but it' s not exactly a new one— it was made back in the 1950's. Here, take a look at this photo. W: Wow, you're right— this car hasn...
A.
Because it was cheap.
B.
Because it is in such good condition.
C.
Because it is a collector' s item.
D.
Because he can re - sell it are high price.
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