However，at times this balance in nature is＿＿，resulting in anumber of possibly unforeseen effects．
#20358
A
troubled
B
disturbed
C
confused
D
puzzled
推荐题目
The highway has been closed because of the heavy snow. Please find an ________ means of transport.
#18248
A
addictive
B
active
C
attractive
D
alternative
How I was _______when I heard the _______ news!
#17983
A
excited; excited
B
exciting; exciting.
C
excited; exciting
D
exciting; excited
The students were all ___after they heard the ____story.
#20914
A
inspired; inspiring
B
inspired; inspired
C
inspiring; inspired
D
inspiring; inspiring
The price of food is _________ this year than that of last year.
#18006
A
8% high
B
8% as high
C
8% higher
D
8% as higher
Lily， ____ of the ______speech, started to read a novel.
#17860
A
tiring, bored
B
tired, bored
C
tired, boring
D
tiring, boring