可引起休克和急性肾功能衰竭的损伤是：（） A.创伤性窒息 B.扭伤 C.挫伤

阅读下面的材料，从每题所给的A、B、C三个选项中选出最佳答案。

    Jackson was driving back home along a road one evening. He just lost his job. It was winter and it was very

cold, just like his feelings.

    An old lady with her car was standing on one side of the road. She needed help. No one stopped to help her.

Jackson stopped in front of her and got out of his car. The lady looked very worried. Even when he put a smile

on his face, the old lady still looked worried. Was he going to hurt her? He didn't look safe, and he looked poor

and hungry. Jackson knew how she felt. He said." I'm here to help you, madam. Why don't you wait in my car?

By the way, my name is Jackson."

     The lady thought for a while and then went into his car. There was something wrong with her car. Jackson

went under her car to repair it. When he finished, he got dirty and his hands hurt. Then the lady told him that

her name was Anie. She asked Jackson how much she should pay for his help.

    Jackson never thought about getting money. This was not a job to him. This was helping someone in need.

He told her that if she really wanted to pay him back, the next time she saw someone who needed help, she

should give that person help.

1. Jackson felt ____when he drove home that evening.

A. strange

B. happy

C. sad

2. Why did the lady look worried?

A. Because she lost her way.

B. Because her car broke down.

C. Because she felt very cold.

3. It was____ for Jackson to repair the lady's car.

A. difficult

B. interesting

C. impossible

4. Jackson helped the lady because _____.

A. the lady would pay him

B. the lady felt cold

C. he wanted to help someone in need

5. The old lady should____ the next time she met someone who needed help.

A. help that person

B. leave that person alone

C.call Jackson for help again

镁燃料电池以镁合金作为电池的一极，另一极充入过氧化氢，电解质溶液是酸化的氯化钠溶液，放电时总反应为Mg+2H⁺+H₂O₂=Mg²⁺+2H₂O．关于该电池说法正确的是（　　）

A．镁合金作为电池的负极，发生还原反应

B．放电时H₂O₂在正极得电子，被还原

C．负极反应式为：Mg-2e^-=Mg²⁺

D．放电时正极附近溶液酸性增强

（）是写实素描的基础？

A、意向素描

B、人体素描

C、明暗素描

D、写实素描

提升管末端快速分离技术的作用是（）。

A.减少二次反应

B.降低油气分压

C.提高旋分器入口的催化剂浓度

D.避免喷嘴堵塞

动机有（）。

A.两个要素：努力的水平，即行为的努力程度；坚持的水平，即遇到阻碍时付出多大努力坚持自己的行为

B.两个要素：内在动机和外在动机

C.三个要素：内在动机、外在动机和努力水平

D.三个要素：决定人行为的方向，即选择做出什么样的行为；努力的水平，即行为的努力程度：坚持的水平，即遇到阻碍时付出多大努力坚持自己的行为