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Câu hỏi:
How long will it take for a message to come back from Mars?
- A. Around 20 minutes
- B. Only a few seconds
- C. Almost immediately
- D. About an hour
Lời giải tham khảo:
Đáp án đúng: A
Mất bao lâu để một tin nhắn quay lại từ sao Hỏa?
A. Khoảng 20 phút
B. Chỉ vài giây
C. Gần như ngay lập tức
D. Khoảng một giờ
Thông tin: there won’t be any real-time communication. Even at the speed of light, communication between the earth and Mars takes about 20 minutes. (sẽ không có bất kỳ giao tiếp thời gian thực nào. Ngay cả với tốc độ ánh sáng, liên lạc giữa trái đất và sao Hỏa cũng mất khoảng 20 phút.
Đáp án cần chọn là: A
Câu hỏi này thuộc đề thi trắc nghiệm dưới đây, bấm vào Bắt đầu thi để làm toàn bài
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