单项选择题

A．It will help detect all kinds of liars.
B．It will most likely prove ineffective.
C．It can help solve complex problems.
D．It is a new weapon against terrorists.
<上一题 目录 下一题>
热门 试题

单项选择题
What is the most effective way to clean the air
A．To let out clean gas.
B．To take in harmful gas.
C．To use various plants.
D．To let the air flow freely.
单项选择题
For what purpose does the pilot shut off all the engines
A．To find out exactly what happens.
B．To save fuel to fly longer.
C．To find out where the big stone is.
D．To fly even more slowly.
相关试题