问题
选择题
—Do you know sound travels very fast?
一Yes. But light travels _________ sound.
A． much faster than
B．a little faster than
C．as fast as
D．slower than
答案
答案：A
题目分析：句意：你知道声音传播很快吗？知道，但是光比声音传播要快得多。Much faster than, 快得多，much用来修饰faster,表程度；a little faster than,快一点点；as fast as和…….一样快；slower than比……要慢。很明显A符合题意。
