题目内容
在铁粉的存在下，苯与溴可发生（）
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Watch the video again and decide whether each of the following information is true (T) or false (F).Symptoms of a cold are the same as those of the flu.
Children with the flu always have higher fevers than adults.
Symptoms of the stomach are not related to the flu among adults.
You need professional help if you have symptoms of the flu for two weeks.
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