单项选择题

Passage Two Questions 14 to 16 are based on the passage you have just heard.

A．It is more comfortable to ride than a metal bike.
B．It is lighter than the ordinary metal bike.
C．It never needs oil at the center of the wheel.
D．It will be burned by the cigarette burns.

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问答题

As society reaches these limits, economic growth can no longer continue, and the quality of life will decrease.

单项选择题

A．Because they may not be fashionable.B．Because they may not be worth the money.C．Because they may be too tight.D．Because they may not fit.

A．Because they may not be fashionable.
B．Because they may not be worth the money.
C．Because they may be too tight.
D．Because they may not fit.