题目

On the National Day, up _____ into the air. Then the crowd cheered up.. A. go the balloons   B. did the balloons go   C. went the balloons  D. the balloons went 答案：C撒哈拉以南非洲分布面积最广的气候类型是（　　） A、热带草原气候B、热带雨林气候C、高原山地气候D、热带沙漠气候