下列选项中，属于资产评估行业可以对市场主体提供的专业服务有（）。
A.测算
B.鉴证
C.评价
D.管理咨询
参考答案：A, B, C, D
The students became silent ____ the entrance of their teacher. [ ]
A. because
B. because of
C. when
预防食品腐败变质有哪些措施？
