—What did the teacher say to you just now?

—She asked me ________.[ ]

A. whether had I finished my work or not      

B. if or not I have finished my work

C. that I had finished my work              

D. whether I had finished my work or not

控制幕墙内在质量的关键是( )。

A．严格进行隐蔽工程验收
B．对材料及其性能进行复验
C．严格检验批的划分
D．严格按照幕墙施工的技术要求