题目

. Not until the motorbike looked almost new____ repairing and cleaning it. A. he stopped    B. did he stop  C. stopped he    D. he did stop 答案：B巴西北部地区的气候类型是________ 气候；巴西矿产资源丰富，主要有_________、锰、铬等储量居世界前列．