Question

At present         robots are common in industry and perhaps they will soon be common in

       home.

A.the;a                         B./;/                             C./;the                          D.the;/

Answer 1

C

解析:

根据句意，robots为泛指，故不用冠词；in the home并非特指，而是泛指一般的家。这是复数名词和定冠词分别用于泛指一类事物的典型例子。

全句意为：目前机器人在工业中很常见，也许不久它们便普及于家庭了。