What caused the health problems to workers after the September eleventh attacks

游客2024-06-17  3

问题 What caused the health problems to workers after the September eleventh attacks according to this passage? [br] Who suffer the breathing problems most according to the latest study?

选项

答案 The building trades,firefighters,police officers and other workers.

解析 参见文章第二段第二句话。
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