_________ is a growing world problem, and nowadays the United Nations and its member countries _________hard to deal with it．
#6050
A
Desertification; are working
B
Desertified ; worked
C
Desert; work
D
Desertification; have worked
推荐题目
We walked a couple of blocks, looking in _______ for a taxi. How disappointed we were!
#6534
A
place
B
order
C
return
D
vain
It is requested that the machine be operated according to the________．
#5149
A
introductions
B
explanations
C
suggestions
D
instructions
--- Why don't you try to do exercise to lose weight?--- I have tried everything but it has made little ______.
#5743
A
effect
B
result
C
difference
D
conclusion
She’s hoping her first performance in the US will be the first step on the road to success, then she wants to try her ________ in Hollywood.
#6573
A
profit
B
fortune
C
distinction
D
wealth
Parents should try to create a friendly ______ in their family, which helps their children develop self-confidence at an early age.
#5303
A
situation
B
atmosphere
C
chance
D
position