Most teenagers sleep enough
查看答案
Night owls are more energetic in the morning than early birds.
A. 对
B. 错
More night owls get good grades in school.
A. 对
B. 错
The farming methods introduced in the 1950s and 60s, were regarded as ________.
A. a revolution in energy saving
B. a way to get rid of pollution
C. the solution to world food shortages
D. the beginning of the organic farming
Which of the following was the advantage of the modern methods of farming?
A. It required little or no chemical fertilizers
B. It increased food production dramatically.
C. It saved a lot of water in farming.
D. It made the soil more productive.
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