板带材中间辊的适当移动，（）带钢的剪边量。
A．增加
B．减少
C．不改变
D．不减少
参考答案：B
_____ Lili and Yaoyao have lunch at school? [ ]
A. Do
B. Does
C. Is
D. Are
—What terrible noise here!
—Go to tell the children that they are ____ to be quiet here.
A．hoped
B．promised
C．thought
D．supposed
