Trắc nghiệm ôn tập
Certain ______ in the atmosphere, such as carbon dioxide, methane and nitrous oxide, block heat from escaping.
Câu hỏi:
Certain ______ in the atmosphere, such as carbon dioxide, methane and nitrous oxide, block heat from escaping.
A.
effects
B.
emissions
C.
gases
D.
layers
Đáp án đúng: C
Đăng bởi: Monica.vn
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