单项选择题

What’s the commission of the X -43A prototype

A．To revolutionize research and develop speed.
B．To revolutionize travel and shatter speed records.
C．To revolutionize flight and explore outer space.
D．To revolutionize exploration and increase experience.
<上一题 目录 下一题>
热门 试题

单项选择题
In fact, people will feel very comfortable if the temperature in winter is _______.
A．70°F
B．80°F
C．75°F
D．65°F
单项选择题
Wahid wanted to fire _______.
A．a cabinet member
B．the national police chief
C．a lawmaker
D．a Muslim scholar
相关试题