chenyuan0909

1）We can do nothing to change our heredity.
2)Environment pollution can be divided into two kinds:personal and nonpersonal.
3)It would be expensive interms profit and perhaps jobs.

chenyuan0909

回复 3# chenyuan0909


    2. Enviromnental pollution can be divided into two kinds: personal and non-personal
    3. It would be expensive in terms of profits and perhaps jobs
    好好学习，努力向上！！！