传染性非典型肺炎临床确诊必须的依据是 ()A．明确的流行病史 B．符合临床症状和体征

— It is said that in the future human beings will have to live in the sky or under the water.  

— ______!You don't really believe that, do you?     [ ]

A. It depends    

B. Go ahead        

C. Oh, come on    

D. That's great

小青同学家的桃树林产量较低、品质欠佳，家长想尽快引进安丘蜜桃或青州蜜桃。你的合理化建议是（ ）

A．种子繁殖

B．全部换栽

C．果枝扦插

D．果枝嫁接

Let's learn to use the problem we are facing ______ a stepping-stone to future success．

A．to

B．for

C．as

D． by

一般情况下，基金银行存款账户、基金清算备付金余额、基金证券账户的各类证券资产数量、余额每日核对。（）

连续降雨天气，山区公路可能会出现路肩疏松和堤坡坍塌现象，行车时应选择道路中间坚实的路面，避免靠近路边行驶。