问题
单项选择题
矿井铁路坡度小于5‰时，前后两矿车间距不得小于（）m。
A.5
B.10
C.20
答案
参考答案：B
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矿井铁路坡度小于5‰时，前后两矿车间距不得小于（）m。
A.5
B.10
C.20
参考答案：B
| 综合填空： | |
1._______. You also remember them 2._______. Do you like to study in the 3.________ room? This is not a good place, because it is usually too 4.______. You need to study in a quiet place, like your bedroom. A quiet place will 5.______ you only to think about one thing. When you study, do not think about other things at the 6._______ time. Only think about your homework. 7.______ you do this, you will do your homework more quickly. And you will make 8.______ mistakes. Good study habits are very important. If you do not have them, try to learn. If 9._______ are already (已经) good, try to make them 10._______. |