12 Read and choose. 读短文，选出正确的选项。
Let’s talk about houses in the future. How long will it take people to build (建造) a house? One year or even more? It will only take about 24 hours. Why can people build a house so quickly? 3-D printing! It can build a house in a short time. It can also use recycled materials (材料). Don’t worry. The house is strong enough for people to live in.
3-D printed houses will help us a lot in the future. In some countries, there are not enough houses for people. People there can use 3-D printing to solve the problem. People can also use 3-D printing to build schools and museums. Scientists can even use 3-D printing to build houses on Mars and the moon. That will come true one day.
() 1. How long will it take to build a house by 3-D printing?
A. About one day.
B. About 24 days.
C. About one year.
() 2. What do we know about a 3-D printed house?
A. People can’t live in it.
B. It will use too many materials.
C. It will be greener.
() 3. Will scientists build houses on Mars and the moon by 3-D printing?
A. Yes, they will.
B. No, they won’t.
C. We don’t know.
() 4. What is the passage about?
A. Life in the future.
B. 3-D printed houses in the future.
C. Different ways to build houses.

1. A 2. C 3. A 4. B

【分析】首先通读短文，明确短文主题是未来的3D打印房子；接着针对每个问题，定位原文对应信息，逐一匹配选项：第1题查找建造时间，第2题查找3D打印房子的特点，第3题查找火星月球建房子的相关内容，第4题归纳全文主旨。
【解析】1. 原文第一段明确提到“It will only take about 24 hours.”，24小时即约一天，对应选项A；2. 原文第一段提到3D打印房子“can also use recycled materials”，回收材料说明更环保（greener），A项与原文“strong enough for people to live in”矛盾，B项原文未提及，故选C；3. 原文第二段提到“Scientists can even use 3-D printing to build houses on Mars and the moon. That will come true one day.”，说明科学家会这么做，选A；4. 全文围绕未来的3D打印房子展开，A项“未来生活”范围过宽，C项“不同建房方式”不符合，故选B。
【答案】1. A 2. C 3. A 4. B
【知识点】英语阅读理解，细节理解，主旨归纳
【点评】本题为英语阅读理解题，考查学生从短文中提取细节信息和归纳主旨的能力，主题贴近科技热点，难度适中，只要认真阅读原文即可正确作答。
【难度系数】0.7