问题
单项选择题
在顶板破碎的情况下使用采煤机采煤防止局部冒顶或掉矸石，最有效的办法是（）。
A.不回柱
B.不割煤
C.多打托梁
D.提前挂金属顶梁
答案
参考答案：D
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在顶板破碎的情况下使用采煤机采煤防止局部冒顶或掉矸石，最有效的办法是（）。
A.不回柱
B.不割煤
C.多打托梁
D.提前挂金属顶梁
参考答案：D
| 阅读理解 |
| Mike wants to borrow an eraser from his friend Ann.But Ann's eraser is at home.Mike wants to buy one in the shop.The shop near the school sells books,pens and many things like that.The shop is big and nice.It is open from Monday to Saturday.It opens at 8:00 in the morning and closes at 6:00 in the evening |
| 1. Mike wants to borrow . |
| A. books B. a pen C. a ruler D. an eraser |
| 2. Ann's eraser is . |
| A. at home B. at school C. in her bag D. on the desk |
| 3. The shop near the school sells . |
| A. food B. fruit C. drink D. school things |
| 4. The shop opens . |
A. at 6:00  B. at 8:00 C. in the morning D. in the evening |
| 5. The shop is . |
| A. big B. nice C. nice but small D. big and nice |