题目

Henry speaks Chinese very well .He      in China since 2002.        A. come                B. has come           C. stayed               D. has stayed 答案：D下列各项中，属于人类对真菌利用的是（　　）①制酸奶 ②酿酒 ③制醋 ④生产青霉素 ⑤做面食A. ①②④ B. ②④⑤ C. ①③④ D. ②③⑤