用介词和副词填空。

1. The girl _____ red are my friend.

2. It's a quarter _____ 7, Let's get up.

3. We often call 6:30 half _____ 6.

4. —Is it ten past twelve?

    —No, not yet. It's ten _____ twelve.

5. —What do you do _____ noon?

    —I have lunch at school.

由于检查器械，检查者或调查对象不愿意，或不能真实回答问题而产生的差异（）

A.随机误差

B.抽样误差

C.选择性偏倚

D.无应答偏倚

E.信息偏倚