In the last two hundred years there have been great changes in the method of production of goods. This is now also true of the building industry; for mechanization has been introduced. System building can save both time and money. The principle of system building is that the building is made from a set of standard units. These are either made at the building-site or at a factory. Some designers, in fact, are standardizing the dimensions of rooms. They are made in multiples of a single fixed length, usually ten centimeters. This is called a modular system, and it means that manufactures can produce standardized fittings at a lower cost. The most important fact about system building is its speed. A ten-storey flat, for example, can be completed in four months.
There are several new methods of system building. One is the panel method. In this case, the construction company sometimes erects a factory on the site. The walls and floors of the building, called panels, are cast in a horizontal or vertical position. Conduits for electrical wires and sleeves for pipes are cast in the panels when they are being made. The moulds for making these castings are situated all around the building.
After the concrete panels are cast, they are allowed to set and harden for a week. Next they are lifted by a tower crane on to any section of the building. There the panels are cemented together at their joints and the floor covering is laid.
After the panels have been cemented together, the crane lifts a case into the area. It contains all the fittings to be installed, such as wash-basins, radiators and pipes. Finishing tradesmen, such as plumbers, plasterers, painters and electricians, follow behind to complete the work.
In some building developments, in some countries, whole flats with internal features like their bathrooms, bedrooms and connecting stairs, and weighing as much as twenty tons, are carried to the building-site ready-made. A giant overhead crane is used to lift them into position. In the future, this method may become more widespread.
1. Which of these statements is TRUE of system building?
A. It employs more men.
B. It is difficult and dangerous.
C. It can save both time and money.
D. It means less mechanization.
2. The main difference between panel method and the method discussed in the last paragraph is_______.
A. the latter uses ready-made internal features
B. panels are cast in a level position
C. the former is used to build walls and floors while the latter to construct bathrooms or bedrooms
D. the former is more expensive than the latter
3. According to the passage, the principle of system building is that_______.
A. construction methods are safer
B. buildings are made from a set of standardized units
C. similar buildings can be produced
D. all units are produced on the site
4. What lifts the concrete panels onto the building?
A. Cranes.
B. Man-power.
C. Pulleys.
D. Hydraulic jacks.
5. The usual fixed length in the modular system is_______.
A. twenty centimeters
B. ten millimeters
C. fifty centimeters
D. ten centimeters
参考答案:
1. C 2.A 3. B 4. A 5. D
提高雅思阅读速度的四大技巧
雅思阅读词汇:心理词汇
解读雅思阅读完成句子题的解题要点
雅思阅读回答问题题的解题方法
雅思阅读配对题的解题方法
雅思阅读段落标题题的解题方法
雅思阅读考试的“解题三步曲”
如何提高雅思阅读速度:抓阅读技巧
雅思阅读完成句子题的解题方法
雅思阅读Not given题的八大考点
做好三点有效提高雅思阅读能力
雅思阅读判断题的把握
雅思阅读:剑四高频词汇总结
雅思阅读精选:奥巴马就职演讲有力度 贯彻实施有难度
解读雅思阅读是非无判断题的解题要点
雅思阅读做题小贴士集锦
雅思阅读语法词汇的处理方法
雅思阅读技巧实践:文章结构阅读法
探讨雅思阅读判断题的标准(下)
雅思阅读简短回答题的解题技巧
解读雅思阅读段落标题题的解题技巧
雅思阅读摘要填空题的解题方法
雅思阅读词汇:教育类词汇
雅思阅读考试的基本复习策略
雅思阅读段落信息配对题的解题方法及思路
Toefl阅读常考语法词组
雅思阅读词汇的四种攻克方法
雅思阅读四大障碍的解决方法
详解攻克雅思阅读T/F/NG题型的技巧
雅思阅读考场技能的训练方法
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |