单项选择题

A．The old package is colorless.
B．The old package is uninteresting.
C．People should protect the environment.
D．The old package is costly.
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least。[解析] 细节题。根据录音中提到“The most-common health problem linked to hot weather is heat stress, Usually, it is also the least severe.”可知由高温引起的健康问题中，热压抑是最轻微的一种。
单项选择题
A．Anti-smoking campaigns.B．Crowded people in the office building.C．Anti-smoking laws.D．Prices of cigarettes.
A．Anti-smoking campaigns.
B．Crowded people in the office building.
C．Anti-smoking laws.
D．Prices of cigarettes.
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