关于井下贯通测量的精度要求，说法正确的是()。
A.井巷贯通的容许偏差值由矿井技术负责人等相关负责人确定
B.井巷贯通的容许偏差值与井巷用途、运输方式等有关
C.一井内巷道贯通在竖直方向上的允许偏差，较两井巷道贯通的要求更高
D.一井内巷道贯通在水平方向上的允许偏差，较两井巷道贯通的要求要低
E.立井贯通的允许偏差和掘进方法有关
参考答案：A, B, C, E
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| Last year my English class was _1_ for me. First of all, it wasn't easy for me to understand the teacher when she _2_ to the class. To begin with, she spoke too quickly, and I couldn't _3_ every word. Later on, I realized it doesn't matter if you don't understand every word, _4_ I was afraid to speak in class because I thought my classmates might laugh _5_ me. I couldn't always make complete sentences, either. Then I started to _6_ English-language TV. It helped a lot. I think that doing lots of listening practice is one of the secrets of _7_ a good language learner. Another thing that I found very difficult was English _8_. So I decided to take lots of grammar notes in every class. | ||||
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