单项选择题

How fast will a rocket go to escape completely from the Earth's gravity ______

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.
<上一题 目录 下一题>
热门 试题

单项选择题
You can't come in, ______ you are.
A．whichever
B．whoever
C．wherever
D．whenever
单项选择题
She talks and acts as if she ______ a monitor now.
A．would be
B．was
C．be
D．were
相关试题