我国目前有哪几种掘进方法？
参考答案：
目前我国煤矿巷道掘进施工方法有：钻眼爆破法、机械化掘进及水力掘进法三种。
The woman is _____ fat because she eats _____ junk food. [ ]
A. much too, too much
B. much too, much too
C. too much, too much
D. too much, much too
玉米免耕播种优点都有哪些？
