According to the author, the distortions of reality ______.
A. are related to the methods of observation
B. can never be avoided
C. are caused by human perceptual mechanism
D. can easily be corrected
查看答案
The plastic bags were first produced in the 1970s and grew increasingly popular since the
A. Y
B. N
C. NG
【B10】
A. of
B. among
C. by
D. including
听力原文：How about farmers' income in the late 1970s？
(34)
A. Farmers had less money to spend than other Americans.
B. Farmers earned about one-third the income of non-farmers.
C. Farmers earned almost as much money as the non-farmers.
D. Farmers earned more money than the average American families.
Many food-carrying bags, made from high density polyethylene, are extremely difficult to recycle.
A. Y
B. N
C. NG
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