题目

阅读理解China has become the first country to successfully land aspacecraft on the far side of the moon. TheChange 4 probe(探测器)has also made thefirst moon landing since1972. It has the task of exploring the side of the moonthat never faces the Earth. The dark side of the moon is older and has athicker surface than the visible side. It takes the moon as long to go aroundon its own axis(轴) as it does for one complete orbitaround the Earth. The Chinese probe landed in a huge crater 2, 500 km indiameter and 13 km in depth. The crater is one of the oldest parts of the moonand our solar 口算，直接写出结果． （1）57×23= （2）911911÷6=322 （3）910×3= （4）78×4= （5）57×717= （6）34×89= （7）317×6= （8）11÷119=910 （9）635×13= （10）327327÷47=8．