价值工程活动更侧重于（）阶段。
A．设计
B．生产
C.检验
D．销售
参考答案：A
The reading club in our school _____ three years ago and I have been one of the students _____ charge of it. [ ]
A. set up, on
B. was started, in
C. put up, at
D. created, in
长期食用精白米面的人群易发生（）。
A、神经炎
B、贫血
C、脚气病
D、坏血病
