第21题: [单项选择]The travelers were ready to enjoy the spectacular tidal waves when suddenly a thick fog came up and obscured the whole scene. A. blurred B. belittled C. banned D. collapsed 参考答案:A 答案解析:[解析] 游客正准备观看壮观的潮汐,这时浓雾飘过挡住了景观。blur使……模糊,最符合题意。如:Subjective view and factors always blur my judgment.