工作面底眼一般应如何布置？
参考答案：
底眼起掏槽眼的作用，它在垂直面上有俯角，俯角为10°～15°，眼底距底板约0.2m，以不留底煤且不破碎底板为原则。
用所给词的适当形式填空。
1. — How many teachers are there in your school?
— About 200. One third of them _____ (be) men teachers.
2. I'm sorry to keep you _____ (wait) for so long.
3. — What are you going to do, Tom?
— I'm going to get my computer _____ (mend)
4. The Yangtze River is the third _____ (long) river in the world.
5. I'm looking forward to _____ (take) holiday in Hainan.
长老派
