659.Ted and his friends established a website offering useful information about thunderstorms _______ similar accidents happening.
A.prevent
B.preventing
C.to prevent
D.prevented
660.Taobao.com has begun selling tickets online for international flights,_________ to cut the market share of Ctrip.com and other competitors.
A.to aim
B.having aimed
C.aiming
D.being aimed
659.答案是C;考查非谓语动词。此处不定式表目的。
660.答案是C:考查非谓语动词。此处aiming表示伴随。
