脚手架遇松土或无法挖坑时应绑（）。
A、大横杆
B、扫地杆
C、斜撑
D、抛撑
参考答案：B
__ it to clear up tomorrow, the tourists would climb to the top of the mountain to see the sun __.
A．If; to raise
B．Were; rise
C．Should; rise
D．If; raising
既能消食，又能回乳的药物是( )
A．神曲B．麦芽C．莱菔子D．山楂E．鸡内金
