At times the balance in nature is ______,resulting in a number of possibly unforeseen effects.
#20601
A
troubled
B
confused
C
disturbed
D
puzzled
推荐题目
It was __________ I went fishing in the open air yesterday.
#19756
A
such a nice weather
B
so nice weather that
C
such nice weather that
D
a nice weather so that
Some parents want to shelter their kids from every kind of danger, real or         .
#18838
A
having imagined
B
being imagined
C
imagined
D
to be imagined