食用菌生产常用的灭菌消毒方法有哪五种？
参考答案：
高压蒸汽灭菌、常压蒸汽灭菌、干热灭菌、紫外线灭菌、过滤除菌
Sun Yang, a young Chinese swimming talent, ___________several gold medals before 2012 London Olympics.
A．won
B．has won
C．had won
D．were to win
The spring outing really relaxed us a lot. That is its value lies.
Awhat Bwhere Chow Dwhy
