Bộ 10 đề ôn thi học sinh giỏi Tiếng anh lớp 9 có lời giải chi tiết (Đề 2)

According to the passage, gramophones were ineffective because they A. got out of synchronization with the picture. B. were too large for most movie theaters. C. were newly invented and still

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According to the passage, gramophones were ineffective because they

got out of synchronization with the picture.

were too large for most movie theaters.

were newly invented and still had imperfections

changed speeds when the needle jumped.

Giải thích

Chọn C