Is this the very material that scientists ______ the 2012 London Olympic Games torch?
A．used to lightB．a(chǎn)re used to lighting
C．use to lightD．a(chǎn)re used to light
A

試題分析：句意為：這正是那種科學(xué)家用來點(diǎn)燃2012年倫敦奧運(yùn)火炬的材料。used to do sth過去常常做某事兒或者是用來做某事兒；be used to doing 習(xí)慣于做某事兒；be used to do sth 被用來做某事兒�？茖W(xué)家用來去點(diǎn)燃奧運(yùn)火炬的材料，故答案應(yīng)為A。
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