阅读理解并判断正(√)误(×)。

      I have a good friend. His name is Tom. He is in a school in England. He goes to school from Monday to

Friday. He likes basketball very much. He can speak a little Chinese. But he can't write in Chinese. He often

writes to me in English. He knows a lot about China. He wants to come to China very much.

( ) 1. Tom is a good friend of mine.

( ) 2. Tom studies in England.

( ) 3. Tom speaks Chinese very well.

( ) 4. Tom doesn't like basketball.

( ) 5. Tom studies at school five days a week.

下列关于绝热工程中，绝热结构的说法有误的是( )。

A．当被绝热物体及内部介质温度固定时，它的热损失主要取决于绝热材料的密度

B．绝热结构应有足够的机械强度

C．绝热结构要有良好的保护层

D．绝热结构要简单，尽量减少材料消耗量