Question

Metal ______making machines and many other things.

A．used to

B．is used for

C．is used as

D．is used to

Answer 1

B

試題分析：句意：金屬常用語制造機器和許多別的東西。is used for doing sth=" is" used to do sth 被用來做某事，故選B
點評：be used to do sth被用來做某事；be used to doing sth習慣于做某事及used to do sth過去常常做某事，是中考必須掌握的基本語言點。其中，used to do sth表示過去常常做某事而現在已經不這樣了。