单项选择题

A．He may see Alan in Italy.
B．He was looking for Alan in the library.
C．He’’s not sure which way to go.
D．He may have made a mistake.
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单项选择题
The damaging effects of acid rain are felt less in the West because _________.
A．Western parts produce much less than a quarter of sulfur oxide emissions
B．Western soils can neutralize the acid
C．Westernly wind spread participants out of the western regions
D．chemical industry is less developed in the western states
单项选择题
A．As one of the greatest American scholars.B．As one of America’’s most ingenious inventors.C．As one of the founding fathers of the United States.D．As one of the most famous activists for human rights.
A．As one of the greatest American scholars.
B．As one of America’’s most ingenious inventors.
C．As one of the founding fathers of the United States.
D．As one of the most famous activists for human rights.
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