小儿正常体重存在着个体差异,一般可波动在()。
A.5%左右
B.8%左右
C.10%左右
D.15%左右
E.20%左右
参考答案:C
解析:[知识点] 小儿体格生长常用指标
30. --- Mrs. Smith, please teach me how to draw on the computer today.
--- Oh, no._______. You have to get familiar with the keyboard first.
A.It is never too old to learn
B.Think twice before you do
C.Learn to walk before you run
D.One today is worth two tomorrows
简述教育领导效率评价的主要内容。