Agriculture was a step in human progress ______ subsequently there was nothing comparable
A. to which
B. signal
C. from which
D. in which
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During the famine of 1943, millions of Chinese peasants ______ to the cities because they
A. migrated
B. emigrated
C. immigrated
D. mobilized
The design of the gymnasium shows a great deal of ______. We have never seen a building of
A. solidarity
B. originality
C. invention
D. fascination
When the doctor proposed to him long walks in the fresh air, Mr. Park admitted ______ for
A. not having been
B. not being
C. being not
D. having not been
若一国具有绝对成本优势,它就不能从国际贸易中获益。
A. 正确
B. 错误