Chọn phương án thích hợp

21 What is the best title for the text?

A How bad is air pollution in big cities?              B What causes air pollution in big cities?

C How can people solve a health problem?         D What can people help to reduce air pollution?

22 Which word has the OPPOSITE meaning to the word reduce in paragraph 1?
Ghi đ án A hoặc B là đc ạ , tặng 5đ cho bn nào làm đc ak

A cut                                 B lower                           C increase                  D decrease

23 Which word has the CLOSEST meaning to the word routes in paragraph 2?

A trips                               B ways                            C stops                       D stations

24 According to the text, which is NOT a suggestion for reducing air pollution?

A using plastic packaging                                       B recycling home garbage

C using public transportation                                  D choosing recyclable packaging

25 Which is TRUE about the landfills in paragraph 4?

A They cause air pollution.                                                 B They help manage household waste.

C They are places for recycling household waste.           D They have a large capacity for garbage.