Question

    Have you ever made a mistake while trying to print from a computer? That paper probably went right into the recycling bin. From there, it is taken to a waste-handling plant to be eventually broken down and remade. But what if you could simply erase your mistake and reuse that paper? It may become available, thanks to a new technology.

It's a new type of rewritable paper that can be used more than 100 times. Words and pictures remain visible on it for at least half a year. This is nearly the first rewritable paper. But the marks on those earlier versions tended to fade away in less than three months.

Luzhuo Chen led the group that made the new rewritable paper. His team was inspired by pens that contain erasable ink. That ink disappears when heated. To make its new rewritable paper, Chen's group switched the ink from the pen to the paper. They covered one side of regular paper with the ink used in those erasable pens. Using a heated pen or printer, they can now write or print on this paper. That warmth makes the ink disappear.

This is the opposite of how writing usually works, where ink is applied to paper. With the new system, the spots where you write become white instead of colored because that heat makes the ink covering the white paper disappear.

Qiang Zhao has a creative mind behind another type of rewritable paper. He thinks Chen's paper is simple and doesn't cost much to make, so it should be easy and fairly inexpensive to produce. However, the paper will need a lot of ink. In large doses（剂量），chemicals in the ink can be bad for the environment and people's health. Zhao would like scientists to develop a safer ink. Still, he thinks this paper will have wide applications.

1.Why does the author raise the questions in the first paragraph?

A.To prove the necessity of recycling paper.

B.To introduce the importance of rewritable paper.

C.To draw readers attention to the new technology.

D.To show the development of paper-making technology.

2.What's the advantage of the new rewritable paper over earlier versions?

A.It can be reused for a lot more times.

B.The costs of producing it are much lower.

C.It can be produced in a much easier way.

D.The contents on it can be more long-lasting.

3.Which of the following reflects Qiang Zhao's opinion on Chen's paper?

A.It still needs improving. B.It's somewhat impractical.

C.It does no harm to its users. D.It's worth promoting right away.

4.What can we know about Luzhuo Chen's new paper from the text?

A.It shows colored words or pictures.

B.It doesn't require ink to write on it.

C.It will replace ordinary writing paper soon.

D.It has no requirement on the writing tool.

Answer

1.C

2.D

3.A

4.B

【解析】

这是一篇说明文。文章讲述了，打印犯错，浪费纸张很可惜，但现在有了一项新技术——可重写纸——能让废纸重新被利用；文章介绍了发明可重写纸的过程、它的优点和可能存在的问题。

1.推理判断题。由第一段的两个问题“Have you ever made a mistake while trying to print from a computer?”（你用电脑打印时犯过错误吗？）和“But what if you could simply erase your mistake and reuse that paper?”（但如果你能简单地抹去你的错误并重新使用那张纸呢？）可以推断出，如果读者发现打印出错还可以重新使用打印错的那张纸的话，读者的兴趣和注意力就会集中到可重写纸这项技术上。因此作者提出这些问题是为了吸引读者关注新技术。故选C项。

2.细节理解题。由题干关键词the new rewritable paper可将答案定位于第二段。由第二段的前两句“It's a new type of rewritable paper that can be used more than 100 times. Words and pictures remain visible on it for at least half a year.”和最后一句“But the marks on those earlier versions tended to fade away in less than three months.”可知，新型的可重写纸，可以使用100多次，文字和图片至少半年内保持可见，但这些早期版本上的印记往往在不到三个月的时间里就消失了，所以新型的可重写纸上的内容能保留更长时间。故选D项。

3.推理判断题。由题干关键词Qiang Zhao's opinion on Chen's paper可将答案定位在最后一段。由最后一段句子“However, the paper will need a lot of ink. In large doses（剂量），chemicals in the ink can be bad for the environment and people's health. Zhao would like scientists to develop a safer ink.”可知，这张纸需要很多墨水，大剂量使用时，墨水中的化学物质会对环境和人体健康有害，赵希望科学家们开发出一种更安全的墨水，说明可复写纸还需提升。故选A项。

4.推理判断题。由题干关键词Luzhuo Chen's new paper可将答案定位于三四两段。由第三段的句子“They covered one side of regular paper with the ink used in those erasable pens. Using a heated pen or printer, they can now write or print on this paper.”和第四段的句子“This is the opposite of how writing usually works, where ink is applied to paper. With the new system, the spots where you write become white instead of colored because that heat makes the ink covering the white paper disappear.”可知，他们用可擦笔上的墨水盖住普通纸的一面，使用加热笔或打印机可以在这张纸上书写或打印，这与书写通常的工作方式相反，即在纸上涂墨水，在新系统中，你书写的地方会变成白色而不是有色，因为高温会使覆盖在白纸上的墨水消失，说明Luzhuo Chen的新纸是不需要墨水的。故选B项。