题目： [单选,材料题] The author tends to think that the fifth level________
A . would be little better than the fourth level
B . may be a lot more desirable than the first four
C . can be the last and most satisfying level
D . will become attainable before the government takes actions
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发表于 2022-4-18 13:32:07
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发表于 2022-4-18 14:32:05
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