单项选择题

A．C-F-C’s are coolants for air-conditioners.
B．C-F-C’s arc easy to eliminate.
C．Farmers and shippers are usually using methyl bromide to kill insects.
D．Ozone layer will recover very soon as long as we stop using methyl bromide and C-F-C’s.
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单项选择题
A．AIDS spreads widely in Africa.B．An educational program reduced the homosexually transmitted cases of AIDS in San Francisco.C．People should alter their basic behaviors to stop the epidemic of AIDS.D．Massive educational programs are costly but very helpful.
A．AIDS spreads widely in Africa.
B．An educational program reduced the homosexually transmitted cases of AIDS in San Francisco.
C．People should alter their basic behaviors to stop the epidemic of AIDS.
D．Massive educational programs are costly but very helpful.
单项选择题
A．He thinks the pants fit him at the waist.B．He thinks the pants are a little tight on the hips.C．He thinks the price is reasonable.D．He doesn’t feel like buying the pants.
A．He thinks the pants fit him at the waist.
B．He thinks the pants are a little tight on the hips.
C．He thinks the price is reasonable.
D．He doesn’t feel like buying the pants.
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