our teacher told us that sound travels____than light. A much more slowly B more fast C much faster
问题描述：
our teacher told us that sound travels____than light. A much more slowly B more fast C much faster
D much slowly
答
A
这是一题既考语法又考常识的题.声速比光速慢,所以先排除B和C,慢得多的用法：much more slowly （副词用法）,再排除D