蛋白质-能量营养不良的好发年龄为
A.3岁以内
B.学龄前期
C.学龄期
D.青春期
E.好发于各年龄期儿童
参考答案:A
His proposal is ________ to all of us and you do not need to tell us more about it.
A.appearing
B.apparent
C.approaching
D.applicant
为了有效地管理资源,系统软件抽象了文件和______两个概念。