找考题网-背景图
单项选择题

A．popularizationB．pauseC．developmentD．ignorance and con……

Peter Sturrock thinks that the field of UFO study is in a state of ______.



A．popularization
B．pause
C．development
D．ignorance and confusion
<上一题 目录 下一题>
热门试题

填空题modification

单项选择题The scientist from the French space agency did all the following things except ______.

A．taking further photos
B．taking soil samples
C．planting vegetation in the soil
D．taking samples of vegetation

填空题controversy

单项选择题In the case that occurred in France in 1981, how many people witnessed it

A．One.
B．Two.
C．Three.
D．Five.

填空题five-year