单项选择题

They eventually plan to _______ the high-speed connections on 1,500 of their planes and sell the system to other airlines.

A．instruct
B．intrigue
C．install
D．inject
<上一题 目录 下一题>
热门 试题

单项选择题
Experts disagree as to why crime rates have continued to fall. Some say the U.S. _______ economy has made crime less attractive.
A．rotary
B．robust
C．rigorous
D．reckless
单项选择题
Some patients don't ask for professional help because _________.
A．they feel it is a shame to let other people know
B．they don't know who they should turn to for help
C．professional help is too expensive
D．professional help is of no use
相关试题