The temperatures in the mountains can drop suddenly and it’s important to ensure you are wearing______clothing.

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问题 The temperatures in the mountains can drop suddenly and it’s important to ensure you are wearing______clothing.

选项 A、effective
B、efficient
C、sufficient
D、deficient

答案C

解析 sufficient表示“充足的,足够的”,比enough正式,如:My father earns sufficient money to support us.我父亲挣的钱足以抚养我们。
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