35._____ price decline ______ farmers' income, the central government has decided to buy more crops to protect farmers.
A.Preventing; to affect B.To prevent; affecting
C.Having prevented; affecting D.To prevent; being affected
34.What a pity! He got nothing in ______ for his hard work.
A.award B.prize C.reward D.result
33.______ your timely warning, we would have been unaware of the danger.
A.In spite of B.But for C.Instead of D.As for
32.The question then ______ that the supply of drinking water in the mountainous area is serious.
A.rises B.arises C.raises D.assesses