Question 1. [NB] Choose the word whose underlined part is pronounced differently from the others. A. development B. relate C. mention D. technology Question 2. [NB] Choose the word whose underlined part is pronounced differently from the others. A. climate B. sighting C. might D. aliens Question 3. [NB] Find the word which does not belong to the group. A. atmosphere B. powerful C. condition D. astronaut Question 4. [NB] Find the word which does not belong to the group. A. untreated B. aquatic C. pollution D. electronic Question 5. [TH] Choose the correct option A, B, C, or D for each gap to complete the following passage. Many human activities over the last 200 years have been responsible (5) ________ polluting the air and damaging people’s health. Automobile engines and power plants burn combustible (6) ________ like gasoline and coal and allow toxic gases and smoke to escape into the air. Some pollutants destroy the ozone layer, which is the thin blanket of gases that (7) ________ Earth from the Sun’s dangerous ultraviolet rays. Other pollutants contribute to (8) ________ warming by adding to the planet’s natural greenhouse effect. A. for B. of C. to D. with Question 6. [TH] Choose the correct option A, B, C, or D for each gap to complete the following passage. Many human activities over the last 200 years have been responsible (5) ________ polluting the air and damaging people’s health. Automobile engines and power plants burn combustible (dễ cháy) (6) ________ like gasoline and coal and allow toxic gases and smoke to escape into the air. Some pollutants destroy the ozone layer, which is the thin blanket of gases that (7) ________ Earth from the Sun’s dangerous ultraviolet rays. Other pollutants contribute to (8) ________ warming by adding to the planet’s natural greenhouse effect. A. chemicals B. means C. fuels D. matters