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【单选题】
蛋白质变性后的主要特征是？A.
肽键断裂
B.
蛋白质沉淀
C.
营养作用丧失
D.
生物学活性丧失
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反馈参考答案：
举一反三
【单选题】下面是一些因特网上常见的文件类型的后缀名，请指出哪个文件类型一般代表WWW页面文件( )
A.
htm或htm1
B.
txt或text
C.
gif或jpeg
D.
wav或au
【单选题】During calls home every two weeks, my mother pleaded with me to take chemistry or biology.
A.
When I made phone calls home every two weeks, my mother urged me to major in chemistry or biology.
B.
In the telephone conversations I had with my mother every two weeks, she encouraged me to switch from chemistry to biology.
C.
When I made phone calls home every two weeks, my mother urged me not to major in chemistry or biology.
D.
In the telephone conversations I had with my mother every two weeks, she encouraged me to abandon chemistry to biology.
【单选题】Concerning mothers hygiene practices, what can be inferred from the passage?
A.
Every mother applies distinctive methods.
B.
Each mother complies with different standards.
C.
Not every mother does the job conscientiously.
D.
Mothers practices vary from one child to another.
【单选题】The mother as well as her two children ________shopping in the supermarket near their house every week.
A.
is going
B.
go
C.
goes
D.
are going
【简答题】Mother often tells us that it is necessary that we ______ (drink)eight glasses of water every day．
【单选题】SECTION 3 Directions: Each passage in this group is followed by questions based on its content. After reading a passage, choose the best answer to each question. Answer all questions following a passa...
A.
explanations of the process by which higher organisms explain themselves have remained elusive until now
B.
self-amplifying activation processes may one day explain most natural processes
C.
scientists have discovered the first proof of Turing patterns to higher organism communities
D.
explanations of how organisms organize themselves into patterns are no longer so elusive as they once were
E.
activation processes are essential to the survival of many ant species
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