单项选择题

A．They may crash because of nature disasters or human faults.
B．The world’’s weather conditions are getting worse.
C．The airport safety inspections are getting worse.
D．Airplanes are often overloaded nowadays.
<上一题 目录 下一题>
热门 试题

单项选择题
A．A flood wall was built.B．Rescue teams were formed.C．An alarm system was set up.D．50 underground stations were made waterproof.
A．A flood wall was built.
B．Rescue teams were formed.
C．An alarm system was set up.
D．50 underground stations were made waterproof.
单项选择题
A．Michael has been diving for nine years.B．Michael dives on holidays with his parents.C．Michael loves diving ever since he first tried it.D．Michael has never taken any diving courses.
A．Michael has been diving for nine years.
B．Michael dives on holidays with his parents.
C．Michael loves diving ever since he first tried it.
D．Michael has never taken any diving courses.
相关试题