问题
多项选择题
植物性神经系统对内脏活动调节的特点有()
A．具有紧张性作用
B．均有双重神经支配
C．一般情况下，双重神经拮抗作用是对立统一的
D．调节作用的效果往往与效应器的功能状态有关
E．交感神经阻滞则副交感神经效应加强
答案
参考答案：A, B, C, D, E
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植物性神经系统对内脏活动调节的特点有()
A．具有紧张性作用
B．均有双重神经支配
C．一般情况下，双重神经拮抗作用是对立统一的
D．调节作用的效果往往与效应器的功能状态有关
E．交感神经阻滞则副交感神经效应加强
参考答案：A, B, C, D, E
| 阅读理解。 |
| No air means death. Although we can not see it, there is air round us. So air is everywhere and it gives life to every living thing. Without it we can not live. Bad air makes people ill. We must have fresh air to keep us in good health. In the city there are a great many people and there are too many cars running on the roads. The gas which the cars spread out is full of poison. Everyday we breathe it in again and again. This makes us feel sick. Therefore people should go out of door as much as they can. Besides so many cars, there are many factories too. From the chimneys of these factories, we get the smoke usually in black or grey colour. This kind of smoke, when it mixes the air, is dangerous to our health. It is because smoke contains many small poisonous solids and gases. So in order to keep us healthy we have to go out to the countryside to breathe more fresh air. Or we can go up hills to get more fresh air. |
| 1. which of the following titles is the best for this passage? |
[ ] |
| Ａ: Air Ｂ: Fresh Air Ｃ: Breathing Air Ｄ: The Use of Air |
| 2. ____ could live without air. |
[ ] |
| Ａ: Fish Ｂ: Anything Ｃ: Fruit Ｄ: Nothing |
| 3. Although we can not see it there is _____ all around us. |
[ ] |
| Ａ: gas Ｂ: poison Ｃ: water Ｄ: smoke |
| 4. Air gives ____to all living things. |
[ ] |
| Ａ: life Ｂ: live Ｃ: death Ｄ: health |
| 5. We must have fresh air to keep our ____. |
[ ] |
| Ａ: breath Ｂ: health Ｃ: wealth Ｄ: death |