卸压保护带动宽度为不小于（）倍巷道高度或回采高度。 A.4 B.2 C.3.5 D.

情景交际（从A---F选出合适的选项，共10分)
Reporter-----R      Michael------M
R: __小题1:___ You just won the first prize in the photo competition.
M: Thank you.
R: Michael, how old are you?
M: Seven.
R: Seven!__ 小题2:___.
M: Since I was three.
R:__ 小题3:__
M: My father, And I take private lessons,too.
R: Here at the photo club?
M: Yes, I’ve taken lessons here for two years.
R: How many days a week?
M: __小题4:_____ I want to practice every day, but my parents say three or four days is enough.
R: Are you going to continue your photos?
M: Uh-huh. ___小题5:____
R: Wish you greater success!M: Thank you!

A. Who taught you how to do that?   B. About three or four.   C. Congratulations D. Which is your favourite photo club? E. How long have you taken photos? F. I want to be a professional（职业的） photographer when I’m older.