The Amazon rainforest is in very big danger of disappearing. 9,169 square miles of forest (i) _______ down in 2003 in Brazil (ii) _______. An area of the size of a football field is burned down basically every minute, which means that the rain forest may be gone by the year 2030. The dangers related to this type of activity are very obvious. Trees (iii) _______ poisonous carbon dioxide from the air and give off oxygen. There is more oxygen and (iv) _______ carbon dioxide around a rainforest. When trees are cut down, however, the amount of carbon dioxide increases and the air gets wanner. This leads to global wanning, which is extremely harmful to the environment. (v) _______ is estimated that the burning of Brazilian rainforests alone produces 200 million metric tones of carbon dioxide a year.
(iv)_____
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Lời giải:
Báo saiĐáp án D. less carbon dioxide: ít các bon đi ô xít hơn
Dùng cấp so sánh với danh từ không đếm được “cacbon dioxide”, ta dùng “less”.