—You must finish this work tomorrow. —OK. It’s not difficult for us _______________ it on time . A. finish B. to finish C. finishing D. to finishing 答案:B现在有一些饭店装有干手器,把洗过的手放在打开的干手器下,就有热风吹到手上,使手上的水很快蒸发掉,这是因为
[ ]
A.提高了水的温度B.增大了水的表面积
C.加快了水面的空气流动D.手吸收了热量