题目

任务型阅读 People are often free on weekends. But Mike had a busy weekend last week. On Saturday morning, he went to visit his uncle with his parents. His uncle lives on a farm. There Mike helped his uncle feed the chickens. There are many animals on the farm. After lunch, Mike went to mountains with his cousins. Mike was happy to see the trees and flowers. In the evening, they saw an interesting movie. Song Dandan was in the movie. All of them laughed all the time. On Sunday morning, Mike wanted to play soccer, but it rained very hard. So he had to stay home. He did some reading a3．“嫦娥三号”成功着陆后，月球车开始了对月球的科学探测，月球表面无大气层，昼夜温差超过300℃，部分土壤非常松软，针对这种环境，下列说法正确的是（　　）A．“嫦娥三号”着陆时要使用降落伞着陆B．月球车的车轮不能使用充气橡胶轮胎C．它向前进的正前方喷射气流使自身速度逐渐降至零，这运用了二力平衡的原理D．月球车的轮子表面积较大，可以减小对月球表面的压力