Nowadays people take___ exercise a day as they did in the past because of widely used automobiles.   
A．less than halfB．less than as half as
C．less than half as muchD．half less than
C
考查倍數(shù)問題。此題結(jié)構(gòu)為：倍數(shù)+ as+ adj./adv.原級(jí) + as。句意：因由于汽車的廣泛使用，現(xiàn)在人們花不到和以前一樣的一半時(shí)間運(yùn)動(dòng)
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