诊断真、假性胃酸缺乏症应选用()
A.苯海拉明
B.组胺
C.西咪替丁
D.氮斯汀
E.肾上腺素
参考答案:B
There is no doubt ____ we will host the 2010 World Expo successfully.
A.which
B.whether
C./
D.that
新企业如何赢得顾客?