开挖沟槽设支撑时，撑杆间距一般为（）m。
A、0.5
B、1
C、1.5
D、2
参考答案：C
If you have to catch the first bus every day,choose this hotel.It is very________for the station-it's only a
twominute walk.[ ]
A. close
B. certain
C. convenient
D. distant
It’s good ____ you to share things with others and it’s good _____ you to exercise every day.
A for;for B for;of C of;of D of;for
