Question

Some of this heat near the earth’s surface _________ make electricity.

A．is used for	B．is used to
C．gets used to	D．used to

Answer 1

B

考查used的用法。A“被用来做......”，+doing；B“被用来”，+do；C“习惯于......”；D“过去常常”。句意“接近地球表面的一些热量被用来发电。”故选B。