经过清理的小麦称为（）。小麦中的维生素主要集中在（）。
参考答案：净麦；胚和糊粉层中
The bridge project hasalready been finished nine months ahead of _____.
A. schedule
B. guidance
C. procedure
D.curriculum
There are ________ people in the supermarket. It's so crowded.
A．hundred
B．hundreds
C．hundred of
D．hundreds of
