单项选择题

What's the author's attitude towards the waste of the earth's resources（）

A．Negative.
C. Neutral.
B．Positive.
D. Enthusiastic.

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单项选择题
The word virtue (the last sentence) most probably means （）

A. an advantage
C. a shortcoming
B. an excellent characteristic
D. an outstanding ability
单项选择题
Products used to be made to last （）

A．for at least five years
B．for ten years
C．for as long as you take good care of them
D．for your whole life
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