It was ___ the quality of life in the fu

中英《南京条约》中开放的通商口岸是 [ ]

A、广州、厦门、福州、宁波、上海

B、广州、厦门、福州、杭州、上海

C、广州、厦门、定海、杭州、上海

D、广州、厦门、定海、杭州、天津

—How do you know that he has bought ___ MP5?

--- He wrote ____ e-mail to me yesterday.

A．a, an

B．an, an

C．a, the

D．the, a

典型生长曲线中延滞期的细菌具有哪些生理特征？

维生素A严重缺乏可出现（）

A.夜盲症 

B.脚气病 

C.佝偻病 

D.口角炎 

E.癞皮病

《全民健身计划纲要》哪一年由国务院颁布实施？