Question

【題目】

A company says it has completed the first 3D-printed home recently. The home was shown to reporters and visitors at a music festival.

The building company has developed large 3D- printers that build homes with mortar, a hard and strong

material. It uses robotics, computer programs and advanced materials to make houses.

Jason Ballard is the company's chief engineer. "So I'm standing in front of the first 3D-printed home in America. This house was actually printed in high winds, blowing dust and rain." It is important for the printing programmes to operate in bad weather conditions, such as weather disasters. The goal is to print homes in developing countries. So the printer has to be light enough to move from one property to the next.

Ballard imagines that someday, many 3D-printers will operate around the world to make homes. "It's actually a lot more simple to build a printer than it is to build a house," he said. "We ran this printer at about a quarter speed to print this house, and completed it in about 48 hours of print time."

The company developed this technology not to make money but to help provide a quick, cheap housing solution for the millions of people who need it most. There are about a billion people that don't have one of life's most basic human needs, and that's safe shelter.

Ballard says his company already works on housing needs with poor families in different areas. But he says that to really make a difference, the program will need to be greatly improved. He added that since the 3D-printing process is so much faster than traditional homebuilding, a whole community could be built in just a few months. He believes over time, people can get the new home below $4,000 with the help of 3D-printers.

【1】What kind of building material can be used in 3-D printing according to the passage?

A. light but strong B. light and soft.

C. strong but expensive D. hard and strong.

【2】What is the meaning of the underlined word property in Paragraph 3?

A. land for farming B. land for building houses

C. land for raising animals D. land for running companies

【3】It will take about hours to print a house if the printer is at its full speed.

A. 12 B. 24 C. 36 D. 48

【4】What is the best title for this passage?

A. The Future of 3D-printing B. The History of 3D-printing

C. The New Use of 3D-printing D. The Instructions of 3D-printing

Answer 1

【答案】

【1】D

【2】B

【3】A

【4】C

【解析】本文介紹了能打印房子的三維打印機，這項技術(shù)不是為了賺錢，而是為了幫助最需要房子的人提供一個快捷的、便宜的建筑房子的方法。

【1】D

細節(jié)理解題。根據(jù)The building company has developed large 3D- printers that build homes with mortar, a hard and strong material.可知在三維打印中使用的建筑材料堅硬，堅固，故選D。

【2】B

詞義猜測題。根據(jù)The goal is to print homes in developing countries.可知這個三維打印機的目的是打印房子的，因此應(yīng)從一個需要蓋房子的地方搬到另一個地方，故選B。

【3】A

推理判斷題。根據(jù)"We ran this printer at about a quarter speed to print this house, and completed it in about 48 hours of print time."可知打印這個打印機的時間是打印這座房子的四分之一，因此完成這個房子需要48小時，故推斷打印這個打印機需要12小時，故選A。

【4】C

標題歸納題。根據(jù)A company says it has completed the first 3D-printed home recently.文中介紹了能打印房子的三維打印機，故選C。