关于人体生命活动的调节，叙述正确的是（ ）
A．受神经调节 或受激素的调节
B．主要是神经调节，也受激素调节
C．人的生命活动只受神经调节
D．人的生命活动只受激素调节
人的调节方式主要两种：神经调节和激素调节．神经调节是指神经系统调节身体的各个器官、系统的活动，使之相互配合，协调一致，使机体成为一个统一的整体来进行各项生命活动；激素调节是体液调节的主要内容，是激素通过血液的传送，对人和动物体的新陈代谢和生长发育所进行的调节．在人体内，体液调节和神经调节的作用是相互联系、相互影响的，人体在神经---体液的调节下，才能够更好地适应环境的变化．例如当人情绪激动时，大脑皮层会兴奋，并通过支配肾上腺的神经促使肾上腺分泌较多的肾上腺素，这些激素能促使心跳加速，血压升高等．故B符合题意．
故选：B．
| 阅读理解。 |
Many places in the world need more fresh water. Every country is trying to find ways to turn salt water |
| 1. From the passage we know that fresh water ________. |
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| A. is needed in every country B. can be found in many factories C. can be used in many ways D. is very important for factories. |
| 2. What is the writer mainly talking about in the passage? |
[ ] |
| A. Hot places and dry places. B. The ways of making fresh water from sea water. C. How to make good use fo the sun. D. Water-making factories in different countries. |
| 3. The Symi factory __________ . |
[ ] |
| A. is a fresh water-making factory B. can be built everywhere C. can make much fresh water at a time D. does not need sunshine every day |
| 4. Which is the best way for small and hot places to get fresh water? |
[ ] |
| A. Boiling or heating the sea water. B. The way in hotter and drier places. C. The Symi's way D. Freezing the sea water in cold places. |
| 5. Why aren't there many factories like the Symi factory? |
[ ] |
| A. Because mny new ways are tried to get fresh in small, hot places. B. Because a lot of water can be made quickly by heating in any places. C. Because people think that the best way is to get more fresh water with the least money. D. Because the Symi's way does not work in dry places. |