閱讀技能訓(xùn)練——掌握主旨大意1--彭靜-wenkub
2022-12-05 14:49:49 本頁面
【正文】 which greatly reduces the overcrowded traffic in the center of the city. As part of the project, two fourkilometer road tunnels are being built below the central area of the city, one for traffic to the north and the other for the traffic to the south. The two tunnels are about 20 meters below the surface and are 12 meters wide, providing for two lanes(線路 ) of traffic in each direction. In the upper part of the tunnel two airconditioning pipes remove the waste gas of trucks and cars and keep the quality of air inside the tunnel. The lighting is at the top of the tunnel, practically at its highest point. There will also be electric signs at frequent intervals. They show traffic conditions ahead and can be seen clearly by drivers. The wall is made up of four main elements, which include a waterproofing covering and, on the inside of the tunnel, a concrete lining(混凝土襯砌 ). Each tunnel is roughly round and the lower part of the tunnel is somewhat flat. The surface of the road lies on the base, which is made of concrete and steel. The drainage system(排水系統(tǒng) ), just below the road surface on one side, removes any extra liquid, particularly water. In the event of fire, the fire main(消防用水管 ), which is made of steel, pipes water to many fire hydrant stations at regular intervals along the length of the tunnel. The fire main is at the side of the tunnel and at the level of the road surface. Other systems in the tunnel will include emergency phones. 75. The passage is mainly about _____. A. the construction of a road B. the design of a road C. the construction of two tunnels design of two tunnels 。無關(guān)信息，既在文章中沒有提到或找不到語言依據(jù)的信息。
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