我国南方地区的地表植被类型以____为主，主要是受____因素影响形成的．

---Now more and more Chinese senior students are applying for admission to American universities through SAT.
---________. But taking an SAT may cost one more than 10,000 yuan.

如图所示，下列几何体中，主视图、左视图、俯视图都相同的是（   ）

根据算式填空：

____

Steve Jobs' well-known sayings, for example, “Stay hungry, stay foolish”, as well as all his great ____ (achieve) in technology will light up the way to the future for the young.