问题
单项选择题
在铁路石方爆破开挖方法中，“开挖宽度较大，挖深较低，方量亦不大，第一类3），4）两种岩石分布形态”适用于以下哪种方法开挖（）。
A.预留隔墙纵向拉槽法
B.纵向V型拉槽法
C.薄层剥离法
D.纵向下导坑法
答案
参考答案：D
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在铁路石方爆破开挖方法中，“开挖宽度较大，挖深较低，方量亦不大，第一类3），4）两种岩石分布形态”适用于以下哪种方法开挖（）。
A.预留隔墙纵向拉槽法
B.纵向V型拉槽法
C.薄层剥离法
D.纵向下导坑法
参考答案：D
Mr Smith is in China now.But he _____ from London. He is ______. He teaches _______ a middle school. He works very hard. His students like ______ very much. He can _____ a little Chinese. His students often teach him Chinese ______ Sundays. Mr Smith likes playing football. He often plays football _______ his students. Mr Smith _______ a son. His name is Jack. He is a student. He studies in a middle school. He goes to school ________ bike every day. He gets back home at four in the afternoon. He likes ______ TV in the evening.
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