苏联由传统的农业国变成强盛的工业国是在 [ ] A． 俄国向帝国主义阶段过渡时

阅读理解。

     Mr and Mrs Jones were going on their vacation (假期) with their children, and they must arrive at the

airport before 11:40 the next morning."It takes us thirty minutes to get there in a car," Mr Jones said," so

we must get ready before eleven o'clock. Don't be late."

     At ten-fifty, all of them were busy doing something, but Mrs Jones wasn't. She sat quietly in a chair in the

garden and enjoyed the good weather.

     Mr Jones and the children were surprised, but Mrs Jones said,"Don't worry! Before I went to bed last

night, I made all our clocks and watches twenty minutes ahead (提前). Now we can get to the airport early."

1. Why did the Jones family have to be ready before eleven o'clock?

A. Because they were going to a party.

B. Because they must arrive at the airport at 11:40.

C. Because they had to go to a town.

2. How long does it take to go from Mr Jones' house to the airport by car?

A. Twenty minutes.

B. Thirty minutes.

C. Fifty minutes.

3. Mr Jones and the children were ______ when they saw Mrs Jones sitting in the garden.

A. sad

B. happy

C. surprised

4. Why did Mrs Jones sit quietly?

A. Because she made all the clocks and watches ahead and they wouldn't be late.

B. Because she didn't like to spend her vacation.

C. Because she wanted to stay at home.

5. What time was it in fact (事实上) when Mr Jones and the children were busy doing things?

A. It was ten-fifty.

B. It was eleven-ten.

C. It was ten-thirty.

如图所示为一弹簧振子做简谐运动的振动图象。由图象可知，8s末弹簧振子的加速度为   m/s²，0~10s内弹簧振子通过的路程为       cm。

关于汉语使用的说法，你认为正确的是[ ]

A．汉语仅限我国汉族人使用，少数民族不使用汉语

B．汉语仅在我国范围内使用，海外华侨使用英语

C．汉语被联合国确定为工作语言之一

D．汉语是世界使用范围最广的语言

______worries her a lot that her husband gets homelater and later.   [ ]

A. That        

B. It            

C. What        

D. Which

关于烧结多孔砖抽样，下列叙述错误的是( )。

A．尺寸偏差、外观质量检查抽样是采用随机抽样法在每批产品堆垛中抽取砖样100块

B．强度、物理性能试验的砖样是从尺寸偏差和外观质量检查合格的砖样中用随机抽样法抽取

C．抗压强度、抗折荷重、冻融、泛霜、石灰爆裂、吸水率试验分别5块，备用5块

D．砖样抽定后要在每块砖样上注明试验内容和编号，不允许随便更换砖样或改变试验内容