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What does the passage mainly discuss?

Câu hỏi: Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.
For a century and a half the piano has been one of the most popular solo instruments for Western music. Unlike string and wind instruments, the piano is completely self- sufficient, as it is able to play both the melody and its accompanying harmony at the same time. For this reason, it became the favorite household instrument of the nineteenth century.
The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries-the spinet, the dulcimer, and the virginal. In the seventeenth century the organ, the clavichord, and the harpsichord became the chief instruments of the keyboard group, a supremacy they maintained until the piano supplanted them at the end of the eighteenth century. The clavichord's tone was never powerful, nevertheless, because of the variety of tone possible to it, many composers found the clavichord a sympathetic instrument for intimate chamber music. The harpsichord with its bright, vigorous tone was the favorite instrument for supporting the bass of the small orchestra of the period and for concert use but the character of the tone could not be varied save by mechanical or structural devices .
The piano was perfected in the early eighteenth century by a harpsichord maker in Italy (though musicologists point out several previous instances of the instrument). This instrument was called a piano e forte (soft Mid loud), to indicate its dynamic versatility; its strings were struck by a recoiling hammer with a felt-padded head. The wires were much heavier in. the earlier instruments. A series of mechanical improvements continuing well into the nineteenth century, including the introduction of pedals to sustain tone or to soften it, the perfection of a metal frame, and steel wire of the finest quality, finally produced an instrument capable of myriad tonal effects from the most delicate harmonies to an almost orchestral fullness of sound, from a liquid, singing tone to sharp, percussive brilliance.
What does the passage mainly discuss?
A. The historical development of the piano
B. The quality of tone produced by various keyboard instruments
C. The uses of keyboard instruments in various types of compositions
D. The popularity of the piano with composers
Bài đọc chủ yếu thảo luận về điều gì?
A. Sự phát triển lịch sử của đàn piano
B. Chất lượng âm được tạo ra từ nhiều nhạc cụ bàn phím khác nhau
C. Việc sử dụng các nhạc cụ bàn phím trong nhiều sáng tác
D. Sự phổ biến của đàn piano với các nhà soạn nhạc
Thông tin trong bài: "For a century and a half the piano has been one of the most popular solo instruments for Western music." (Trong một thế kỷ rưỡi, piano là một trong những nhạc cụ độc tấu phổ biến nhất cho ấm nhạc phương Tây.)
- 'The ancestry of the piano can be traced to the early keyboard instruments of the fifteenth and sixteenth centuries-the spinet, the dulcimer, and the virginal..." (Nguồn gốc của cây đàn piano có thể được bắt nguồn từ các nhạc cụ bàn phím đầu tiên của thế kỷ thứ 15 và 16- Spinet, Dulcimer, và Virginal...)
- 'The piano was perfected in the early eighteenth century by a harpsichord maker in Italy (though musicologists point out several previous instances of the instrument)." (Cây đàn piano được hoàn thiện vào đầu thế kỷ thứ 18 bởi một nhà sản xuất đàn harpsichord ở Ý (mặc dù các nhà âm nhạc học đã chỉ ra một số trường hợp trước đó của loại nhạc cụ).)
Đáp án A.
 

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