单项选择题

Why does the author say that nothing was wasted before the invention of fridges

A．people would not buy more food than was necessary.
B．Food Was delivered to people two or three times a week.
C．Food was sold fresh and did not get rotten easily.
D．People had effective ways to preserve their food.
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单项选择题
Which of the following phrases in the fifth paragraph indicates the fridge's negative effect on the environment
A．"Hum away continuously".
B．"Climatically almost unnecessary".
C．"With mild temperatures".
D．"Artificially-cooled apace".
单项选择题
The statement in my fridge- less fifties childhood, I was fed well and healthily suggests that______.
A．the fridge was in its early stage of development in the 1950
B．the author was well-fed and healthy even without a fridge in his fifties
C．there was no fridge in the author's home in the 1950s
D．the author was not accustomed to using fridges even in his fifties
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