题型：判断题 Tommy is looking for the watch his uncle _____ him last month. A. gives B. gave C. to give D. has given 查看答案
题型：判断题 3CM波长雷达，雨的衰减（）。A.非常小，可以不考虑衰减的影响B.较小，可以忽略不计C.大雨时有较大衰减，应该考虑衰减的影响D.很大，探测大面积强降水时，雷达只能探测出靠近雷达站那一侧的降水，远离雷达站一侧的降水由于衰减严重而探测不到 查看答案