单项选择题

The passage tells us that cats ().

A. sleep longer than humans
B. have similar sleeping habits as humans
C. have no regular sleep
D. take naps in addition to their regular sleep

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单项选择题
Till last July, it has been () years since Congress passed the National Minimum Drinking Age Act.

A. 19
B. 20
C. 21
D. 22
单项选择题
Which place did the storms first strike().

A. The eastern U.S.
B. The Gulf of Mexico.
C. The Canadian border.
D. Some areas in Cuba.
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