砂浆车工作时，液压系统的正常工作压力大致为（）。 A.4～6MPa B.8～10MP

阅读理解。

      Mr. Green had a farm in England. He and his wife grew a lot of things on the farm. They worked

very hard. One day Mr. Green said to his wife, "Dear, let's go to London next Sunday. We can have a

good lunch there, and then we can go to the cinema." His wife was very happy when she heard this,

because she and her husband always ate a lot, and she didn't like cooking three times every day. 

     They went to London by train and walked for an hour. When it was twelve o'clock, they wanted to

have a meal. They looked at a few restaurants. In one of them there was a blackboard outside. On the

blackboard was "Lunch 12:30 to14:30 ￡1.50".

      "Well, that's good," Mr. Green said, "We eat for two hours for ￡1.50 here! This is the place for

us."

1. Mr. Green took his wife to a very _____ restaurant. [ ]

A. expensive

B. cheap

C. new

D. old

2. Mrs Green was happy because _____. [ ]

A. She didn't have to cook

B. Mr. Green ate too much

C. she couldn't eat much

D. they worked hard

3. Mr. and Mrs Green wanted to see a film (电影)           . [ ]

A. before lunch

B. in the morning

C. in the afternoon

D. in the restaurant

4. The words on the blackboard told people that ______. [ ]

A. they must eat a very slow lunch

B. they must eat for two hours

C. they could have lunch any time between 12:30 and 2:30

D. They must be in the restaurant at 12:30 and leave at 2:30

5. Mrs Green wanted to go into the restaurant because ______. [ ]

A. they could eat for a long time

B. they could eat quickly

C. she was in London

D. she was not hungry

阅读《狼》选段，回答第1—6小题。      

       少时，一狼径去，其一犬坐于前。久之，目似瞑，意暇甚。屠暴起，以刀劈狼首，又数刀毙之。方欲行，转视积薪后，一狼洞其中，意将遂入以攻其后也。身已半入，只露尻尾。屠自后断其股，亦毙之。乃悟前狼假寐，盖以诱敌。狼亦黠矣，而顷刻两毙。禽兽之变诈几何哉？止增笑耳。

1、选出加横线词意思完全相同的一组[ ]

A、屠自后断其股      两股战战阶段

B、乃悟前狼假寐      家祭无忘告乃翁

C、以刀劈狼首      意将遂入以攻其后也

D、其一犬坐于前     饮于河渭

2、选出对下列加横线的语气词解释错误的一项[ ]

A、禽兽之变诈几何哉（反问语气）

B、止增笑耳（感叹语气）

C、意将遂入以攻其后也（疑问语气）

D、狼亦黠矣（感叹语气）

3、从后面的发展情节来看，“一狼径去”是为了                    ， “其一犬坐于前”“目似瞑，意暇甚”是为了                     ，表现了狼的                        。

4、文段中最能表现屠户当机立断杀狼的描写是                                。

5、读了狼这个故事你得到什么启示？

6、翻译句子。

（1）少时，一狼径去，其一犬坐于前。

（2）意将遂入以攻其后也。

一束光线的45°的入射角从光疏媒质射入光密媒质，则光线（）。

A.直线通过

B.折射

C.反射

D.全反射

男，38岁。双侧股骨干骨折3小时，体温36.5℃，脉搏细弱，血压60/40mmHg，四肢冰冷，无尿。病人应采取的体位是

A．平卧位

B．头和躯干抬高10°

C．头、躯干抬高10° ~20°，下肢抬高20°~30°

D．头、躯干抬高40~50°，下肢抬高30°~40°

E．下肢抬高60°

催化剂计量泵的形式为（）。

A、离心泵

B、隔膜泵

C、齿轮泵

D、螺杆泵