2. 外语
  3. It would be very difficult for a library to be without dictionaries and encyclopedia; such reference books are______.

It would be very difficult for a library to be without dictionaries and encyclopedia; such reference books are______.

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问题 It would be very difficult for a library to be without dictionaries and encyclopedia; such reference books are______.
选项 A、unavoidable
B、inevitable
C、indispensable
D、fundamental
答案C
解析 indispensable 表示“必不可少的”，如：Air and water are indispensable to life．空气和水是生命所必需的东西。 unavoidable，inevitable意为“不可避免的”，如：Such a difficult operation may not succeed，it’s an inevitable gamble．这样难度很大的手术可能不成功，但这是一次非做不可的冒险。fundamental 意为“基本的”。
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