在托福考试中，考生们必须有一定的词汇积累量以后，才能在托福考试中游刃有余。而且有一些基础类词汇，大家不但要了解它们的拼写方式，更要清楚它们的运用方法和搭配关系！
Group 3 evolution and migration
1.adapt
2.diverse
3.evolve
4.feature
5.generation
6.inherent
7.migration
8.physical
9.process
10.survive
Group 4 petroleum alternative
1.constraint
2.contamination
3.deplete
4.dispose of
5.elementally
6.emission
7.extinction
8.reservoir
9.shrink
10.stable
