题目

四大干湿地区的划分依据是 A．一个地方年总降水量的多少                     B．降水量与蒸发量的对比 C．活动积温                                                 D．海拔高低 答案：BAs an old sailor, he has ____________ in most parts of the world in his time. He must be interesting to listen to.        A．knocked over   B．knocked about  C．knocked out     D．knocked off