（1）炭在火炉中燃烧得很旺时，在往炉膛底内的热炭上喷洒少量水的瞬间，炉子内的火会

阅读理解。

Dear Tim,

　　Today is Saturday. It's 7:00 in the evening here. I'm writing to tell you

something about my life. My father is watching CCTV news. That's his favorite

program. My brother is playing computer games. My dog Dick is taking the hat to

me. He wants me to put it on and go out for a walk with him. What a clever dog!

My little sister is practicing(练习)playing the piano. It sounds beautiful today.

Outside, Ican hear cars and buses coming and going quickly(快). Also there are

some boys playing ball games.

　　It's really a noisy(嘈杂的)but happy evening. Do you think so?

　　What re your fami1y doing? I know the time here is thirteen hours ahead of(提前)that in New York. Are you getting up?

　　Please write to me soon. Best wishes!

                                                                         Yours,

                                                                         Denial

1. Denial's father is _____.

A. listening to the news

B. watching his favorite TV show

C. watching a video

D. listening to some music

2. The dog wants the writer to put the hat on because_____.

A. he likes the hat very much

B. he thinks the hat is strange

C. the weather is too hot

D. he wants to go out for a walk

3. What does the writer think of the piano playing skill of his little sister?

A. It's much better. (更好).

B. It's just as usual.

C. It's much worse(更糟).

D. It's always so good.

4. How does the writer feel when he is writing the letter?

A. Not very well.

B. Very bad.

C. Very glad.

D. Very sad.

5. What time is it in New York when the writer is writing the letter?

A. 4:00 a.m.    

B. 5:00 a.m.

C. 6:00 a.m.    

D. 7:00 a.m.

在下列关系中，属于共同共有关系的有哪些

A．甲乙丙3人各出资2.5万元，购买一工厂

B．甲乙丙3人共有一栋房屋，甲乙主张为按份共有，丙主张为共同共有，但都没有证据

C．个体工商户将餐厅折成1万股，卖给乙5000股

D．兄弟2人各自出资共同购买共同居住的生活用房

试述采用网篮法测定粗集料的表观密度、表干密度和毛体积密度的试验步骤及结果计算方法。

在肉中，决定持水性的重要因素是（）和（）。

利用机械进行喷涂抹灰施工时，应怎样清洗管路？