She is American. she knows little about American history.? A.so B.yet C.and D.th

She is American，__________she knows little about American history.?

A.so                      B.yet                     C.and                    D.therefore?

试题答案

B?

解析:

yet用作并列连词，可以表示转折或对照，意为“但是，然而”。与but相比语气稍弱。