如果高水平学生在测验项目上能得高分,而低水平学生只能得低分,那么就说明下列哪种质量指标高( )
A.效度
B.信度
C.难度
D.区分度
参考答案:D
解析:见大纲中区分度的定义.
.— Can I use the telephone on the table,sir?
—Under no circumstances____to use the telephone in the office for personal affairs.
A.anyone is allowed
B.nobody is allowed
C.is anyone allowed
D.is nobody allowed
7~9个月的婴儿可添加的食物是()
A.鲜果汁
B.菜泥
C.面包
D.碎肉