由于辐射的作用，多年平均来说，大气是净得到能量还是净失去能量（）A．通过吸收地面长波

阅读理解。

     My name is Tommy. I come from Canada. I'm thirteen years old. I have big blue eyes and blond hair.

  I'm tall. My shirt is red and my pants are white. Now I'm in Class Seven, Grade Eight. Look! That boy

 in a green coat is my friend, Paul. He's from the U.S.A. He's twelve. He is strong. We are in the same

  school, but we are in different classes. Paul gives his photo to me. I give my photo to him, too. We are

 good friends.

1. Is Tommy from the U.S.A.?

    ______________________________

2. What does Tommy look like?

    ______________________________

3. Who is strong?

    ______________________________

4. Who is the boy in green?

    ______________________________

5. Does Paul have Tommy's (Tommy的) photo?

    ______________________________

今年实施的海南离岛免税政策规定，首饰、工艺品、手表、香水等18种商品为免税试点商品，旅客每人每次可以免税购物5000元，这引发了人们争相购买免税商品。免税商品受到热捧说明

A．消费者需要树立正确的消费观

B．免税商品一般是需求弹性较大的商品

C．免税商品消费有利于扩大内需

D．免税商品消费都是由攀比心理引发的

双下肢对称性紫癜伴荨麻疹者常见于（）。

A.过敏性紫癜

B.再生障碍性贫血

C.激素性紫癜

D.血小板减少

E.特发性血小板增多症

膈脚外侧积液提示（）

A.腹水

B.肺内结节

C.心包积液

D.胸水+腹水

E.无定位意义

从证券公司证券部管理要求上看，风险管理是一证券公司证券营业部的管理核心。 ( )