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Câu hỏi:
As used in the last sentence, the word "they" refers to ___________
- A. fiberscopes
- B. light-wave communication systems
- C. television programs
- D. telephone calls
Lời giải tham khảo:
Đáp án đúng: B
Đáp án B
(Light-wave communication systems can handle an immensely greater number of telephone calls ... and they will form ...)
Dịch nghĩa: Hệ thống sóng ánh sáng giao nhau có thể thức hiện một số lượng lớn các cuộc gọi…và chúng
Câu hỏi này thuộc đề thi trắc nghiệm dưới đây, bấm vào Bắt đầu thi để làm toàn bài
YOMEDIA
Hướng dẫn Trắc nghiệm Online và Tích lũy điểm thưởng
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