单项选择题

Cigar and pipe smokers consume ______.

A．slightly less nicotine than cigarette smokers
B．less nicotine than cigarette smokers
C．no less nicotine than cigarette smokers
D．much less nicotine than cigarette smokers

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单项选择题

Amputation of limbs (Par

A．6 ) means ______.A. cutting off legs or armsB. disease of legs or armsC. curing of legs or armsD. discomfort of legs or arms

单项选择题

According to 1970 figures in the U.S. men smokers are ______.

A．twice as many as women smokers
B．two times as many as women smokers
C．1.5 times as many as women smokers
D．seventeen percent less than women smokers