题目内容
13.A new eight-kilometre road is under construction that links the port area with the motorway system.It is expected to carry 20,000trucks and cars a day,which greatly reduces the overcrowded traffic in the center of the city.As part of the project,two four-kilometre road tunnels are being built below the central area of the city,one for traffic to the north and the other for traffic to the south.The two tunnels are about 20metres below the surface and are 12metres wide,providing for two lanes of traffic in each direction.In the upper part of the tunnel two air-conditioning 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 electronic signs at frequent intervals (间隔).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 (混凝土衬砌).
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 (排水系统),just below the road surface on one side,removes any extra liquid,particularly water.In the event of fire,the fire main,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.
28.Each of the tunnels under construction isD.
A.eight kilometers long and twelve metres wide
B.eight kilometers long and six metres wide
C.four kilometers long and twelve metres wide
D.four kilometers long and six metres wide
29.Which part of the tunnel in the diagram is used to pipe out extra water?C
A.1
B.3
C.5
D 6
30.Driving in the tunnel,one can know the traffic conditions ahead throughB.
A.the lights
B.the electronic signs
C.the trucks and cars
D.the emergency phones
31.The passage is mainly aboutD.
A.the construction of a road
B.the design of a road
C.the construction of two tunnels
D.the design of two tunnels.
分析 本文是一篇科教类阅读.文章主要介绍了两个隧道的设计.简单介绍了隧道的内部结构.
解答 28-31 DCBD
28.D.细节理解题.根据"As part of the project,two four-kilometre road tunnels are being built below the central area of the city,one for traffic to the north and the other for traffic to the south.The two tunnels are about 20metres below the surface and are 12metres wide"可知每个隧道都是四公里长六米宽.故选D.
29.C.推理判断题.根据"The drainage system (排水系统),just below the road surface on one side,removes any extra liquid,particularly water."可知图中5用于输送额外的水.故选C.
30.B.推理判断题.根据"There will also be electronic signs at frequent intervals (间隔).They show traffic conditions ahead,and can be seen clearly by drivers."可知电子信号的作用是显示交通状况.故选B.
31.D.主旨大意题.纵览全文并根据"As part of the project,two four-kilometre road tunnels are being built below the central area of the city,one for traffic to the north and the other for traffic to the south."可知文章主要介绍了两个隧道的设计.故选D.
点评 本文是一篇科教类阅读.此类题型主要考查学生的细节理解和推理判断能力.细节理解题是针对文中某个细节、某句话或某部分具体内容设置问题,所以在做细节理解题时要结合原文和提干有针对性的找出相关语句进行仔细分析,再结合选项选出正确答案.在做推理判断题时不要以个人的主观想象代替文章的事实,要联系上下文根据文章事实进行合乎逻辑的推理判断.在做主旨大意题时考生首先要仔细阅读短文,完整了解信息,准确把握作者观点,确定主旨.