Circle A, B, C, or D which best completes each blank in the following passage.
The traffic light signal was invented by a railway signaling engineer. It was installed (36)_______the House of Parliament in 1868. It (37)_______like any railway signal of the time, and was operated by gas. However, it exploded and killed a policeman, and the accident (38)_______ further development until cars became common.
Modern traffic lights are an American invention. Red-green systems were installed in Cleveland in 1914. Three-color signals, (39)_______by hand from a tower in the middle of the street, were installed in New York in 1918. The first lights of this type to (40)_______in Britain were in London, on the junction between St. James street and Piccadilly in 1925.
38. _________
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Lời giải:
Báo saiGiải thích: 38. A. cấm B. tránh C. không khuyên khích D. thất vọng
Tạm dịch: Tuy nhiên, nó đã phát nổ và giết chết một cảnh sát, và vụ tai nạn không khuyến khích phát triển thêm cho đến khi ô tô trở nên phổ biến.