单项选择题

Passage One

A. Species protection methods are effective.
B. More people are changing their behavior.
C. New energy substitutes are found for future use.
D. The wbolc population of birds is increasing.
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单项选择题
A. Talking with friends about the trip. B. Having lunch quickly. C. Buying some travel books. D. Checking their car at the garage.
A. Talking with friends about the trip. B. Having lunch quickly.
C. Buying some travel books. D. Checking their car at the garage.
单项选择题
C
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