Paper produced every year is the world`s production of vehicles.
A. three times the weight
B. the three times weight
C. as three times heavy as
D. three times as heavier as
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(答案→)A. three times the weight
B. the three times weight
C. as three times heavy as
D. three times as heavier as
解析：考查倍数表达法。倍数表达法：倍数 as形容词原级+名词as…；倍数永远放在最前面。本题的three times就是倍数，放在最前面。后面接as…as结构，中间接形容词原级。句意：每年生产的纸张的重量是全世界车辆的重量的三倍。故A正确。