单项选择题

Symptoms of sugar diabetes include（）.

A.increased appetite and thirst
B.decreased appetite and thirst
C.gain in weight
D.elevated temperature

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单项选择题

A.they generate heat
B.they emit hydrogen
C.of the toxic fumes they emit
D.they recharge faster in a well ventilated space

单项选择题

A.indication of broken bones
B.breathing and heartbeat
C.symptoms of concussion
D.bleeding injuries

单项选择题

A.lighter than air
B.heavier than air
C.a yellow gas that is easily recognized
D.mildly toxic