2.The civil war broke out in Libya, ______ to the instability of the international oil price．
A. to contribute B. contributed
C. having contributed D. contributing
【答案】D
【解析】考查非谓语动词。句意：利比亚爆发了内战，造成国际油价不稳定。contributing to the instability of the international oil price，现在分词在句中作结果状语。contribute to造成，选D。