Questions 38-40        Top officials are now calling lead the No, I environmental threat to children. The new concern is based on evidence that farsmailer doses of lead than previously believed can harm children. Studies conducted over the last ten years suggest that ingestingthe lead equivalent of three granules of sugar a day can slow development and make children less intelligent. If that's true, eventhe dust created by a lead-painted window rubbing against its sill can be toxic to children, and old setworks of lead water pipespose serious hazards. This makes lead a health risk in many homes, from crumbling inner city tenements to suburban houses thatwere once thought to be relatively safe from lead. U.S. public health officials estimate than 3 million tons of leaded paint still linethe interiors of 57 million private American homes or nearly 60 percent of the housing stock.
【題組】38. The passage states that small doses of lead in children can result in
(A) mental imbalance and mood swings.
(B) severe headaches and possible eye disorders.
(C) mental retardation.
(D) restricted growth.