41.Because noise regulations restrict the hours of operation.
43.1. The population around the airports will increase.
2. Transportation costs to and from airports will reduce.
44.No.
45.The Economic Costs of Noise Pollution.
PARTⅠStructure and Vocabulary (10%)
Directions: There are 20 incomplete sentences in this part .For each sentence there are four choices marked A,B,C and D.
Choose the ONE answer that best completes the sentence .Then blacken the corresponding letter on the Answer Sheet With a
pencil.
1.To my great surprise the food was still on the table ,_____
A. untouching B. no touch
C. un...[
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