气调防治
参考答案：
通过改变环境如仓库里的气体组成和气压来控制仓储害虫、虫螨和微生物的生长和发生，以保证储藏的安全。
Tom is the only one of the staff members who ______ to be promoted.[ ]
A. is going
B. are going
C. has been going
D. have been going
下面各题的计算对吗？把不对的改过来．
（1）1.23-1.23×0.76‘
=0×0.76
=0______
（2）4.5×3.6+6.4
=4.5×10
=45______．
