1.If proper drainage is required, which backfill material is most appropriate?
1.若需要良好排水，哪种回填材料最合适？
2.Why is fencing installed near the drip line of a tree?
2.为什么在树木滴水线附近设置围栏？
3.Root rot is classified as what type of disease?
3.根腐病属于哪一类病害？
4.What is the best time of day to water a lawn?
4.给草坪浇水的最佳时间是：
5.Which professional commonly uses dibbles to make holes in soil?
5.哪种专业人员常使用点植器（dibble）打孔？
6.What is the most effective way to recycle a removed tree?
6.回收移除树木最有效的方法是：
7.When should tree planting be avoided?
7.何时应避免种树？
8.Most California cities consider a lawn abandoned if grass exceeds:
8.在加州，大多数城市认为草坪荒废的标准是草高超过：
9.Which method is most efficient for establishing grass on sloped terrain?
9.在坡地上建立草坪最有效的方法是：
10.After removing the crown of a small 20-foot tree, how should it be felled?
10.移除一棵 20 英尺高小树的树冠后，应如何放倒树干？
