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趣找答案
21.What can we conclude from Chart 1?001,A.A small minority require immediate action.B.Most schools exceed state lead limits.1d71M1C.All schools pose health risks to children.D.Lead levels are rising across the state.22.What do we know about the lead level in Washington Elementary?A.It requires the school to replace taps.B.It is within the safe limits for students.C.It has necessitated parental intervention..IBD.It may particularly harm children's health.