Although解释：

尽管；虽然；但是；然而

Although语法：

conj. 连词

Although同义词：

although, while, though, despite that, in spite of, even if

Although造句：

Although he is known to only a few, his reputation among them is very great.虽然知道他的人不多，但他在这些人中名声却很响。

Although相关资料：

Although this is true in principle, it is very different in practice.

A.however B.but

C.while D.when

【答案】C