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外语
Prices reach equilibrium at the level at which quantity demanded______quantity supplied.
Prices reach equilibrium at the level at which quantity demanded______quantity supplied.
admin
2015-06-27
28
问题
Prices reach equilibrium at the level at which quantity demanded______quantity supplied.
选项
A、is equal to
B、equal
C、equals to
D、is equal
答案
A
解析
be equal to是固定搭配,意为“与…相等”,等于及物动词equal。在at which引导的定语从句中.主语为第三人称单数,而[B]equal不是第三人称单数形式,[C]和[D]形式又不正确,故[A]为答案。
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专业英语四级
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