题目内容

是细胞内最重要的抗氧化剂。

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包括亮氨酸、异亮氨酸和缬氨酸。

乳清蛋白的生物学功能有哪些?

By next Monday, he ______ in Britain for three years.

A. will have been
B. had been
C. have been
D. lived

Text BWhich of the following topics may be discussed in more detail in the text?

A. Overcoming homesickness when in college.
B. College as a very important time.
C. How to choose courses in college.
D. The importance of good grades.
E. How to make friends in college.
F. How to be independent.

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