单项选择题

A. Because he likes learning.
B. Because his hearing center is still immature.
C. Because his ears are immature.
D. Because he wants to know how to use his ears.
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单项选择题
A. Redwood trees. B. Forest fires. C. San Francisco. D. Survival skills.
A. Redwood trees.
B. Forest fires.
C. San Francisco.
D. Survival skills.
单项选择题
A. Return and borrow books in the library. B. Go to work in the library. C. Return books in the library and buy 2 books in the bookstore for his mother. D. Write out list of books his mother wants to read.
A. Return and borrow books in the library. B. Go to work in the library.
C. Return books in the library and buy 2 books in the bookstore for his mother.
D. Write out list of books his mother wants to read.
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