语法与词汇20.If we______our relations with that country, we'll have to find another supplier of raw materials.
【正确答案】
C
【答案解析】本题考查动词辨析。we'll have to find another supplier of raw materials(我们将不得不寻找另一个原料供应国)的前提条件是与之前的原料供应国的关系出现了问题,terminate((使)终止,(使)结束)符合题意,故为答案。diffuse意为“扩散;传播”。diminish意为“(使)减少,(使)变小”。preclude意为“阻止;排除;妨碍”。