The problem is difficult,____,he has worked it out.A:though B:yet C:while D:and

题目

The problem is difficult,____,he has worked it out.A:though B:yet C:while D:and
请问这题选什么呢?A还是B?为什么?因为我真的不明白,
The problem is difficult,____,he has worked it out.
A:though B:yet C:while D:and

答案

A:though
尽管,虽然.意为：虽然问题有难度,他还是解决了问题.
yet 通常用在句尾,表示还是,仍然.though连接前后两句,放句首句中都可以.