单项选择题

Yellowstone National Park is one of the older parks in the U.S. It was established by Congress in 1872.

A．one of
B．older
C．established
D．by Congress
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单项选择题
Paula doesn't want to attend the meeting and Sheila doesn't too.
A．doesn't want
B．attend
C．and
D．too
单项选择题
I didn't enjoy him singing so softly, though I generally enjoy quiet songs.
A．him
B．so
C．though
D．generally
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