()是旅行社委派导游的正式凭证
A.导游证
B.导游人员资格证
C.旅行社团队运行计划表
D.介绍信
参考答案:C
The hotel in Nanchong wasn’t particularly good. But I ____ in many worse hotels.
A.was staying
B.stayed
C.would stay
D.had stayed
输精管残端包埋的主要目的是()
A.预防精子肉芽肿的形成
B.降低附睾淤积症的发生率
C.降低自然再通的发生率
D.A和B
E.B和C