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Heat stroke is more serious than heat exhaustion because heat stroke victims

  • A.do not sweat
  • B.have no salt in their bodies
  • C.can not take in water
  • D.have muscle cramps

Answer: A

Heat stroke is more serious because its victims do not sweat.

The passage names 'a blocked sweating mechanism' and 'hot and dry skin' among the features of heat stroke. Sweating is how the body gets rid of excess heat, so when it stops the temperature keeps rising, which makes the condition life-threatening.

The passage does not say that the victims have no salt in their bodies or cannot take in water, and muscle cramps are not mentioned, so options B, C and D have no support in the text.

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