单项选择题

What is( are) the advantage(s) of baby-pooling ()

A. The parents can have much more free time.
B. The kids can make new friends.
C. The kids won’t be hanging around their parents all day long.
D. All of the above.

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单项选择题

Where did Tudngou begin()

A. In America.
B. In Europe.
C. In North America.
D. In China.

单项选择题

When a tsunami happens, the best course of action for people is to()

A. listen to radio and television broadcasts for information
B. get inland and to the higer ground as quickly as possible
C. stay where they are
D. rely on the warning systems