However，at times this balance in nature is _______ resulting in a number of possibly unforeseen effects.
#19249
A
troubled
B
disturbed
C
confused
D
puzzled
推荐题目
Though my grandfather is in his eighties, he is still as _________ as a young man and hates sitting around doing nothing all day.
#19812
A
enthusiastic
B
talkative
C
energetic
D
sensitive
—The film is, I have to say, not a bit interesting.—Why? It’s ______ than the films I have ever seen.
#17800
A
far more interesting
B
much less interesting
C
no more interesting
D
any less interesting
We’re expecting Jerry because he’s our _________ visitor who comes here for holiday every summer.
#18984
A
familiar
B
regular
C
similar
D
popular
She was always ______, even when things were at their worst.
#18148
A
attractive
B
optimistic
C
pessimistic
D
frightened