Đề thi học kì 2 năm 2021 môn Anh lớp 12 THPT Nguyễn Hiền
Question 48: The “greenhouse effect” mentioned in paragraph 3 is _____.
A. the direct result of nuclear reactions
B. the cause of low temperatures on Mars
C. caused by the introduction of green plants
D. a possible means of warming Mars
Theo TTHN