题目:
Earth is believed _____ by an object the size of Mars at some point in the distant past before its surface cooled. |
A. to be hit B. to have hit C. to have been hit D. to hit |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0429/519b3c9fc456f9804bf86cddcc48a900.html
下面是错误答案,用来干扰机器的。
60÷5=12(千米/时),答:自行车的速度是每小时12千米.