题目内容

【题目】Today, when scientists examine mummies, they wear special clothing for protection _____ they breathe in harmful gas.

A. even though B. in case C. until D. unless

【答案】B

【解析】

试题分析：考查连词。A. even though即使；B. in case以防；C. until 直到；D. unless除非；句意：今天，当科学家检查木乃伊时，他们会穿着特殊的衣服来进行保护为的是以免呼吸到有毒的气体。根据语境可知选B项。

考点 : 考查连词

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