Question

—More and more people prefer to walk rather than ride in cars.

—______________. Walking is good for health.

A.So they are B.So are they C.So they do

Answer

C

【解析】

句意：——越来越多的人宁愿步行也不愿开车出行。——他们确实是。步行对身体有好处。

考查情景对话及强调句辨析。so they are的确如此；so are they他们也是；so they do的确如此。根据上文More and more people prefer to walk rather than ride in cars“越来越多的人宁愿步行也不愿开车出行”及下文Walking is good for health“步行对身体有好处”，可知，下文是对上文说的内容表示赞同，所以用so+主语+助动词/系动词的结构，上文中prefer是实义动词，所以要借助于助动词，故空格处填so they do。故选C。