（ ） to lead is known to damage the brains of young children.
举一反三
- ______ to lead is known to damage the brains of young children. A: Extent B: Exposure C: Extension D: Extraction
- High levels of lead could damage the _________ development of children. A: invisible B: intellectual C: illiterate D: inevitable
- The small plastic chip will help people whose brains . (damage)
- He is very fond of young children.。（ ）
- The message is perhaps too _______ to be understood by young children.