()a lot is the best way to know the outside world A reading B playing C watch
问题描述：
()a lot is the best way to know the outside world A reading B playing C watch
答
()a lot is the best way to know the outside world
A reading B playing C watch
选A.
Reading a lot 大量阅读 -ing形式在句中作主语.
大量阅读是了解外面世界的最佳途径.