水质老化是指水静止时间越久,水分子缔合就越多,______.

题型:填空题

问题:

水质老化是指水静止时间越久,水分子缔合就越多,______.

考点:水的性质和用途
题型:填空题

阅读理解。

    Tom is five years old. He has no brothers or sisters. He is a lovely boy. He doesn't go to school because

he is too young. He likes to play with other children in the small park every day.

     The park is near his building. In the park there are interesting things to see and play with.

     Tom's parents love him very much. They often buy him nice things. This time, his mother buys some

new clothes for him. The clothes are expensive and nice. Tom is very happy to wear them. 

     "Mum, can I go out and play with my friends? I want them to see my new clothes," asks Tom. "All

right, but please keep your clothes clean," says Mum. "I am going to do some cooking. We will have supper

after your father comes back." At about six, his father comes back from work. And Tom goes home for

supper.

     "Why do you have much earth (泥土) on your clothes?" asks his mother.

     "Because I have some falls (摔跤)," answers Tom. "You should not make the nice clothes dirty", Mother

says.

     "I'm sorry, Mum", says Tom, "But I have no time to take off my clothes when I fall."

1. Tom ______. [ ]

A. is six years old

B. is a student

C. is five years old

D. has a brother and a sister

2. How do you know Tom's parents love him very much? [ ]

A. They let him play with other small children.

B. They let watch TV all day.

C. They often buys some nice things for him.

D. Tom doesn't go to school.

3. How does Tom make his clothes dirty? [ ]

A. Hi friends make his clothes dirty.

B. He has some falls.

B. He doesn't like the new clothes.

D. He takes off his new clothes and puts them on the dirty earth.

4. The word "lovely" means ______. [ ]

A. 淘气的

B. 可爱的

C. 好看的

D. 喜爱的

5. Which is not right? [ ]

A. Tom doesn't go to school.

B. There is a small park near his home.

C. Before Tom falls, he takes off his clothes.

D. Tom often goes out to play with his friends.

题型:填空题

I used to spend much time ___ TV at home.

A.watch

B.watching

C.to watch

D.watches

题型:填空题

投资50万元以上的建设项目应报固定资产投资报表。()

题型:填空题

连挂手信号显示内容为()交互显示数次,无绿色灯光时()交互显示。

题型:填空题

期货交易所为交易双方提供结算交割服务和履约担保,实行严格的结算交割制度,下列有关结算公式描述错误的是( )。

A.当日盈亏=平仓盈亏+持仓盈亏

B.持仓盈亏=历史持仓盈亏+当日开仓持仓盈亏

C.历史持仓盈亏=(当日结算价-开仓当日结算价)×持仓量

D.平仓盈亏=平历史仓盈亏+平当日仓盈亏。

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