火宫殿有一名名言：“火宫殿里的臭豆腐，有三个特点：闻起来很臭，看起来很脏，吃起来很香。”这是谁说的？
参考答案：毛 * * 。
制作ELISA载体材料最常用的物质是（）.
A.聚氯乙烯
B.聚苯乙烯
C.硝酸纤维素膜
D.尼龙膜
E.磁性微粒
He said that light ______ much faster than sound. [ ]
A. has travelled
B. went
C. travels
D. travelled
