---Treesproduceoxygentofightairpollution．---Yes．Theyharmfulgasesandcleantheair．（）A.with；takeoutB.against；takeoutC.for；takeinD.against；takein

Question

---Trees produce oxygen to fight _______ air pollution．
---Yes．They _______ harmful gases and clean the air．（　　）

A. with； take out

B. against； take out

C. for； take in

D. against； take in

Answer 1

答案：D．with 和…；for 为了…；against 反对…；take in 吸收； take out 带出去．fight against 抵抗；此题中 fight against air pollution 抵制污染；take in harmful gases 吸收有害气体．故此题应该选D．