Is this the very material that scientists the London Olympic Games torch?A. used to

问题补充：

Is this the very material that scientists the London Olympic Games torch?

A. used to light

B. are used to lighting

C. use to light

D. are used to light

答案：

(答案→)A. used to light

B. are used to lighting

C. use to light

D. are used to light

解析：句意为：这正是那种科学家用来点燃伦敦奥运火炬的材料。used to do sth过去常常做某事儿或者是用来做某事儿；be used to doing 习惯于做某事儿；be used to do sth 被用来做某事儿。科学家用来去点燃奥运火炬的材料，故答案应为A。