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Câu hỏi:
Several toxic gases are very ________ to our health.
- A. harmful
- B. good
- C. useful
- D. careful
Lời giải tham khảo:
Đáp án đúng: A
Harmful (adj): có hại
Dựa theo nghĩa câu chọn được đáp án phù hợp, khí ga độc thì đương nhiên có hại cho sức khoẻ.
Các đáp án còn lại:
B. good (adj): tốt
C. useful (adj): có lợi, có ích
D. careful (adj): cẩn thận
Dịch nghĩa: Một vài dạng khí ga độc rất có hại cho sức khoẻ con người
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