在利用海水晒盐时,阳光和风力所起的主要作用是( )
A.降低温度
B.蒸发溶剂
C.增大压强
D.减少溶质
答案:B
—Would you like to go for a walk with me, Allen?
—I'd love to, ________you don't want to go alone.
A.until
B.before
C.if
D.after
无害化