用人单位应当依照有关法律、法规的规定，采取有效的保护措施，预防职业中毒的发生，依法参加工伤保险，保障劳动者的生命安全和身体健康。
1、正确正确
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Hisparentswouldn'tlethimmarryanyone____familywaspoor.
Washerisamachine____(用它我们洗衣服)orapersonwhoiswashing.
Hepaidtheboy$10forwashingtenwindows,mostof____hadn'tbeencleanedforatleastayear.
Hebuiltatelescope____hecouldstudytheskiesinhisfreetime.
Didyouattendthemeetingyesterday____Marytalkedalot?
