GWD28-Q21:
According to entomologists, single locusts are quiet creatures, but when locusts are placed with others of their species, they become excited, change color, vibrate, and even hum.
A. when locusts are placed with others of their species,
B. when placing them with others of their species, then
C. locusts, when placed with others of their species,
D. placing them with others of their species,
E. placed with others of their species, then
为什么E不对,我觉得E更简洁,答案是A
Section 301 of the 1988 Omnibus Trade and Competitiveness Act enables the United States Trade Representative to single out a country as an unfair trader, begin trade negotiations with that country, and, if the negotiations do not conclude by the
A. by the
B. by the
C. with the
D. to the
E. to the
为什么是D不是B,这里为什么要用to
因为E选项有歧义 when placed是修饰蝗虫还是昆虫学家?
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to one's satisfaction是固定用法了
没有by one's satisfaction这种说法的
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