单项选择题
A．canal B．narrow strip of hand C．kind of crocodile D．man who once ruled Panama
A．1, 300S B．1, 500S C．1, 600S D．1,700S
A．An urgent need for contact with adult. B．A child’s efforts to be independent. C．A child’s unsureness. D．A child’s making statements about his own cleverness.