第21题: [单项选择]The crowd cheered out ______ when their beloved citizen appeared in his wheelchair. A. homogeneously B. simultaneously C. spontaneously D. harmoniously 参考答案:C 答案解析:难词辨义。原句意为:当他们最可爱的公民坐着轮椅出现的时候,人群自发地欢呼。homogeneously意为“同种类地,同性质地”,simultaneously意为“同时地”,spontaneously意