单项选择题

According to the passage, people in the West today survive on ______.

A．carrots and tomatoes
B．several thousand types of plants and cereals
C．a very small number of cultivated foods
D．special species planted one thousand years ago

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热门试题

单项选择题

People enjoy listening to music, ______.

A．though they are receiving a lot of decibels of sound in fact
B．because it does not have any negative effect
C．because they do not have to tolerate the noise around them
D．even though it is sometimes unpleasant hearing strange sound

单项选择题

According to the passage, people ______.

A．cannot work better in a noisy situation
B．will suffer from complete deafness of noise pollution
C．can be psychologically affected by working in very noisy factories
D．may cooperate well in a noisy surroundings