卢瑟福提出原子的核式结构模型．这一模型建立的基础是( )． A．粒子的散射实验

When I was there, he was still working. He said that he (1) for the last two hours (2) that he was going to stop (3) . He added that if I had arrived ten minutes later, I (4) at home. When I mentioned that the house looked quite (5) , he said that the woman (6) usually cleaned it had been sick for some time and (7) for over a week. When I asked him (8) he did not do it himself, he said that he (9) to do so if Mrs. Jones did not come the (10) day.

[A] who [B] whom [C] which

I have been working with Lily for years, and never before        her so serious![ ]

A. I found        

B. I have found   

C. did I find      

D. have I found

与强制式沥青混凝土拌和设备相比，滚筒式沥青混凝土拌和设备的特点有（）

A.对空气污染大

B.热利用率低

C.混台料残余水分较多

D.混合料强度较低

自己独立、批量购进汽车、拥有所有权并以获取批发利润为目的的是？（）

A、地区分销商

B、委托代理商

C、特许批发商

D、独立批发商

（）指标与岩石吸水性能无关。

A、吸水率

B、含水率

C、饱水率

D、饱水系数