Question

【題目】Scientists claim to have developed a revolutionary new giant 3D concrete printer that can build a 2,500-square-foot house in just 24 hours.

The 3D printer, developed by Professor Behrokh Khoshnevis from the University of Southern California, could be used to build a whole house, layer by layer, in a single day.

"It is basically scaling up 3D printing to the scale of building," said Khoshnevis.

The giant robot replaces construction workers with a nozzle (噴嘴), which can quickly build a home based on a computer pattern, MSN News reported.

Contour Crafting, as it is named, is a layered fabrication (構(gòu)造) technology. Using this process, a single house or a colony of houses, each with possibly a different design, may be constructed in a single run, embedded (嵌入) in each house all the wires and pipes for electrical, plumbing and air-conditioning.

The potential applications of this technology are far-reaching including in emergency, low-income, and commercial housing.

"Our research also addresses the application of Contour Crafting in building habitats on other planets. Contour Crafting will most probably be one of the very few feasible approaches for building structures on other planets, such as the Moon and Mars, which are being targeted for human habitation before the end of the new century," researchers said on the project website.

The technology may potentially reduce energy use and emissions. And the main advantages of the Contour Crafting process over existing technologies are the superior surface finish that is realized and the greatly increased speed of construction.

【1】Professor Khoshnevis has recently developed a 3D printer that can ________.

A. build a 2500-square-foot house in a single day

B. construct a skyscraper, layer by layer

C. design a group of houses automatically

D. assist construction workers in their work

【2】The new 3D printer uses the following to build a house EXCEPT ________.

A. a nozzle B. a computer pattern C. a robot D. an air-conditioner

【3】According to the text, the potential applications of Contour Crafting include building _______.

A. emergency vehicles B. low-income housing

C. commercial centers D. space stations on other planets

【4】What advantages of this new technology is mentioned in the text?

A. It creates more jobs. B. It is less time-consuming.

C. It saves the building cost. D. It emits no carbon dioxide.

Answer 1

【答案】

【1】A

【2】D

【3】B

【4】C

【解析】這是一篇介紹說明文。文章主要介紹了科學(xué)家們開發(fā)出的巨型3D混凝土打印技術(shù)，這種技術(shù)可以在24小時內(nèi)建造出一幢2500平方英尺的房子。

【1】細(xì)節(jié)理解題。由第一段“Scientists claim to have developed a revolutionary new giant 3D concrete printer that can build a 2,500-square-foot house in just 24 hours”可知，科學(xué)家們宣稱已經(jīng)研制出一種新的3D立體打印機，這種打印機可以在24小時內(nèi)建造一座2500平方英尺的房子。故A選項正確。

【2】細(xì)節(jié)理解題。由第四段中的“The giant robot replaces construction workers with a nozzle (噴嘴) , which can quickly build a home based on a computer pattern”可知，這臺巨大的機器人用噴嘴代替了建筑工人，以計算機模式為基礎(chǔ)，可以快速地建一座房子。故用排除法可知，空調(diào)在建房子時并沒有被使用。D選項切題。

【3】細(xì)節(jié)理解題。由第六段中“The potential applications of this technology are far-reaching including in emergency, low-income, and commercial housing”可知，這種新型3D打印機潛在的功能中有一項是可以為低收入人群打造出所需的房子。故B選項正確。

【4】細(xì)節(jié)理解題。由文章最后一句“And the main advantages of the Contour Crafting process over existing technologies are the superior surface finish that is realized and the greatly increased speed of construction”可知，Contour Crafting程序超過其他現(xiàn)有工藝的最大優(yōu)點是極好的表面光潔度，同時大幅提升建筑的速度，這會大大節(jié)省建筑成本。故C選項正確。