2. 外语
  3. What is the most important factor for a rocket to escape from the Earth? ______ How fast will a rocket go to escape completely

What is the most important factor for a rocket to escape from the Earth? ______ How fast will a rocket go to escape completely

admin2009-05-28  32
问题 What is the most important factor for a rocket to escape from the Earth? ______
How fast will a rocket go to escape completely from the Earth’s gravity? ______
选项 A、Seventy miles per second.
B、Seven thousand miles per hour.
C、Twenty-five thousand miles per second.
D、Twenty-five thousand miles per hour.
答案D
解析 从文章的第二段最后一句，可以得知逃离地心引力的速度是每秒7英里或者每小时2万5千英里。所以本题的答案应该是D。
转载请注明原文地址:https://jikaoti.com/ti/WlPMFFFM
本试题收录于： 大学英语三级B级题库大学英语三级分类
0

大学英语三级B级

大学英语三级

相关试题推荐
随机试题
最新回复(0)