漫水道路行车时，应挂高速档，快速通过。

下列是生物对外界刺激作出反应的生命活动是（　　）

A．人出汗

B．斑马发现敌害后迅速奔逃

C．蘑菇从小长大

D．雏鸡破壳而出

— I’m so sorry for stepping on your foot.

— ____.

A．That’s all right

B．No, it’s my fault

C．You didn’t hurt me at all

D．Yes, don’t worry about it

根据短文内容及所给首字母提示写出所缺单词。

     Some western countries insist that China is one of the world's biggest greenhouse gas emitters (温室

气体排放者). But in fact our government has taken actions 1. a_______ to struggle with climate change.

     Firstly, the public are educated to 2. p_______ more attention to the environment. As the government

expects, the people have reached a very 3. h_______ level of knowing low-carbon economy (低碳经济).

4. I_______ you watch TV, listen to the radio or read newspapers, you'll find low-carbon lifestyle has

become a fashion. Secondly, developing renewable energy is another action. The government is 5.

b_______ many wind farms and solar power stations in the deserts. Of course, 6. w_______ a long time,

China will continue using the coal. At the same time, the government has been making 7. l_______ to

punish those people who dare to destroy the environment. Besides, some 8. s_______  have suggested

that greening the deserts is more important than developing new forms of energy. Their 9. l_______

research shows that 80% of the CO2 in the atmosphere comes from land use.

     As we know, China hasn't 10. a_______ a balance between the green lifestyle and the economic

growth, but we are on the way. We'll take more actions to reduce the greenhouse gas emission.

1._______ 2._______ 3._______ 4._______ 5._______

6._______ 7._______ 8._______ 9._______ 10._______

七种无上

为什么说密封齿会对螺杆式压缩机起到应急保护作用？