Most teenagers are early birds.
查看答案
Most teenagers sleep enough
A. 对
B. 错
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
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