单项选择题

What is the impact of the program of Oregons Portland International Airport?
A. It helps the airport to keep a friendly environment.
B. It increases compost used in the city landfill.
C. It reduces the cost on hauling trash from the airport.
D. It promotes the application of biodegradable bags.

A.
B.
B.
C.
C.
D.
D.

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单项选择题
听录音，回答以下问题：
A.The words．
B.The chamcters．
C.The tones．
D.The pictures
A.The
B.
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C.
C.The
D.
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A.They call point to a letter and read it over and over again．
B.They can make the shape of a letter with a finger．
C.They can draw pictures of words such as'dog'．
D.They can discuss the pronunciation of the print．
A.They
B.
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C.
C.They
D.
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E.