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乳清蛋白的生物学功能有哪些？

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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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Match the following words or expressions with their synonyms.

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Fill in the blank with suitable preposition or adverb.1. Endless wars have turned this once wealthy country _____ one of the poorest nations in the world.

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