The seaman ________ swim only half way before he drowned(淹死).

The seaman ________ swim only half way before he drowned(淹死).
A、could
B、might
C、was able to
D、would
【正确答案】:C
【题目解析】:be able to 表示自己通过努力获得的能力,而can 强调的是自身已经具有的能力,因此这里不选could ,C正确。