computers are convenient to us in daily life it may also cause other problems.A. Whether

问题补充：

computers are convenient to us in daily life, it may also cause other problems.

A. Whether

B. Because

C. As

D. While

答案：

A. Whether

B. Because

C. As

(答案→)D. While

解析：考察连词用法,四个选项分别表示是否不论、因为、由于和虽然然而，根据题意选D，虽然电脑在日常事务中对我们来说很方便，但是它也会引起其他问题。