![](https://static.youtibao.com/asksite/comm/pc/images/content_title_q.png)
[单选题]
()is an irregular flow of air in the atmosphere that produces bumps and lurches during flight when an aircraft flies through it.
A.Tornado
B.Thunderstorm
C.Storm
D.Turbulence
![](https://static.youtibao.com/asksite/comm/pc/images/content_title_a.png)
查看答案
A.Tornado
B.Thunderstorm
C.Storm
D.Turbulence
第3题
A. immense
B. irregular
C. continuous
D. routine
第5题
A.unwatched
B.surrounded by riprap
C.a minor light
D.constructed on an artificial island
第6题
One hundred online courses make fl Harvard education_________ worldwide.
A.valuable
B.allowable
C.accessible
D.knowledgeable