At times the balance in nature is ______ , resulting in a number of possibly unforeseen effects. 
#84042
A
troubled
B
confused
C
disturbed
D
puzzled
推荐题目
The UK ________ Great Britain and Northern Ireland, is a country famous _____ its history.
#69115
A
consisted of, for
B
consisting of, as
C
consisting of, for
D
consisted of, as
Loulan is believed ____ by sandstorms from AD 200 to AD 400.
#70910
A
to be gradually covered over
B
to have been gradually covered over
C
being gradually covered over
D
having been gradually covered over
The cinema was crowded with many people, ____ many children ____ on their parents’ laps. 
#72855
A
including; seated
B
including; seating
C
include; sat
D
included; sitting