题目
A、chemicals
B、smoke
C、bacteria
D、perfume
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A.There are some studies that have concluded that bamboo could be used by builders more widely than it is used now as a construction material.
B.Recent studies have shown that bamboo is a suitable construction material, suggesting its wider use in the building industry.
C.Some studies have concluded that bamboo could be more widely used than it is now as a construction material.
D.According to a number of recent studies, it is feasible to increase the use of bamboo in the construction industry.
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