单项选择题

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A． Seldom are new scientific theories rejected quickly.
B． New scientific theories are often slow to be accepted.
C． Scientists rarely publish their theories immediately.
D． Quick benefits are expected from this new scientific theory.

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单项选择题How can parents teach their children responsibility according to the talk（）

A． By speaking like a baby.
B． By using real names.
C． By being consistent.
D． By talking in a patronizing way.

单项选择题What did Sandy promise to do（）

A． Lend him some books.
B． Give him more advice.
C． Return the books by Wednesday.
D． Let him use her notes.

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听句子，缩写原文。（）