2. 外语
  3. The text is written_________. Antifreezes are so useful that they__________.

The text is written_________. Antifreezes are so useful that they__________.

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问题 The text is written_________.
Antifreezes are so useful that they__________.
选项 A、can prevent ice from melting
B、keep alcohol from boiling away
C、keep water from freezing in very cold water
D、can raise the freezing point of water
答案C
解析 从本文第一段可以得出。故本题答案为C。
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