--- What is your favourite sport? --- Swimming, I think. It’s _____ of all. A. earsier B. more difficult C. the most interesting D. the most boring 答案:C 考查形容词的最高级。询问最喜欢的运动,其回答的形容词应该是最有趣的。设A为实数,则下列算式一定正确的是( )A.(cosA+isinA)2=cos2A+isin2AB.(cosA+isinA)2=2cos2A+isin2AC.(cosA+isinA)2=cos2A+isin2AD.(cosA+isinA)2=cosA+isinA