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Câu hỏi:
Find the mistake: It is necessary and required that dental technicians and others who work with X-rays limit his exposure to these high penetrating rays.
- A. high
- B. and required
- C. his
- D. and others
Lời giải tham khảo:
Đáp án đúng: C
Kiến thức: Tính từ sở hữu
Giải thích: “dental technicians and others” là danh từ số nhiều
→ Sửa “his” thành “their”
Tạm dịch: Điều cần thiết và bắt buộc là các kỹ thuật viên nha khoa và những người khác làm việc với tia X phải hạn chế tiếp xúc với các tia xuyên thấu cao này.
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