— How did you find your visit to Qingdao, Joanna?

— _____.[ ]

A. Oh, wonderful indeed

B. I went the alone

C. First by train and then by ship

D. A guide showed me the way

百日咳的主要临床表现（）

A.阵发性痉挛性咳嗽

B.稽留热

C.咳嗽终止时伴有鸡鸣样吸气声

D.皮疹

E.咯血