单选题 Only one-fifth of Americans saw oil as the chief mason that the U.S. made a war on Iraq, but 75 percent of the French and of the Russians believed ______.
A. to B. so
C. go D. do

【正确答案】 B

【答案解析】[解析] 习语辨析。
believe想，认为：“Has he arrived yet?”“I believe so.”“他到了吗?”“我想是到了。”