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举一反三
【单选题】The Esky, a great Australian invention—it’s about as important to the Australian household as a BBQ (烧烤的野餐). How else would we move our carefully prepared food and drink around without having it spoil...
A.
They put them in plastic bags.
B.
They use ice to keep the temperature down.
C.
They cover them with thick cloth.
D.
They do nothing.