Question

See a cell phone cover that you like on Taobao? Forget about placing an order, paying the bill online and waiting for days for it to be delivered to you. In the near future, you'll be able to get it in minutes just by hitting "print" on your computer.
You might find it hard to believe that you could actually "print" an object like you would a picture. But it is not that hard to understand how it would work. Just as a traditional printer sprays (噴) ink onto paper line by line, modern 3-D printers spread material onto a surface layer by layer, from the bottom to the top, gradually building up a shape.
Instead of ink, the materials the 3-D printer uses are mainly plastic, resin (樹脂)and certain metals. The thinner each layer is --- from a millimeter to less than the width of a hair ---  the smoother and finer the object will be.
This may sound like a completely new technology, but the truth is that 3-D printing has been around since the late 1980s. Back then, it was hardly affordable for most people, so few knew about it.
Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost ?20,000 (200,000 yuan), while now they cost only about ? 1,000, according to the BBC.
Taken out of the factory and introduced to more diverse and common uses, 3-D printing can create just about anything you can think of ---flutes (笛子), bikinis, jewelry, aircraft parts and even human organs. In fact, scientists from Cornell University in New York have just made an artificial ear using a 3-D printer, according to Science Daily. The fake ear looks and acts exactly like a natural one.
However, as 3-D printing becomes more common, it may bring about certain problems --- such as piracy(盜版). "Once you can download a coffee maker, or print out a new set of kitchen utensils (餐具) on your personal 3-D printer, who will visit a retail (零售的) store again?" an expert in 3-D printing told Forbes News. Even more frightening, what if anyone in the world could use a 3-D printer to print out a fully functioning gun?

1. 1.
   According to the article, in the future, the 3-D printing technology will ______.
   1. A.
      enable people to make better purchases online
   2. B.
      be applied as widely in our daily lives as computers
   3. C.
      change the way we make many products
   4. D.
      shorten the time it takes for people to get what they buy online
2. 2.
   What was the big event happening in the 3-D printing industry last year?
   1. A.
      The 3-D printing technology was taken out ofthe factory
   2. B.
      The 3-D printer became more affordable forconsumers
   3. C.
      The 3-D printer was used for medical treatmentfor the first time
   4. D.
      3-D printing technology began to be used invarious fields
3. 3.
   How is the last paragraph developed?
   1. A.
      By analyzing a cause and an effect
   2. B.
      By making comparisons
   3. C.
      By giving examples
   4. D.
      By presenting research findings
4. 4.
   What is the best title of the passage?
   1. A.
      Printing out everything
   2. B.
      Technology in the future
   3. C.
      Online shopping disappearing
   4. D.
      Great demand for 3-D printers

Answer 1

CBCA
試題分析：本文介紹了三維印刷機(jī)的情況，它通常被簡稱為3D印刷機(jī)，其工作原理非常簡單。首先在電腦上繪制產(chǎn)品草圖，并細(xì)化修補(bǔ)其形狀和著色。接著按下印刷按鈕，印刷機(jī)開始運(yùn)作，產(chǎn)品慢慢成型。3D印刷術(shù)將隨著技術(shù)本身的不斷改進(jìn)迅速鋪開，使用成本急劇下降。但是本文還給出了一些擔(dān)憂，萬一能夠印出槍支了，不就對(duì)社會(huì)的治安帶來一些麻煩了。
1.細(xì)節(jié)理解題。根據(jù)In the near future, you'll be able to get it in minutes just by hitting "print" on your computer.改變了我們制造產(chǎn)品的方式,故選C
2.細(xì)節(jié)理解題。根據(jù)Last year, though, saw a big change in the 3-D printing industry--- printers became much cheaper. For example, 10 years ago a desktop 3-D printer might have cost £20,000 (200,000 yuan), while now they cost only about £ 1,000, according to the BBC.
人們能夠買得起了,因?yàn)閮r(jià)格降下來了,故選B。
3.細(xì)節(jié)理解題。根據(jù)it may bring about certain problems舉例說明它的普遍性,故選C。
4.標(biāo)題歸納題。根據(jù)全文來看3D印刷機(jī)能接觸到的領(lǐng)域很廣，故選A。
考點(diǎn)：科普類短文閱讀。
點(diǎn)評(píng)：做標(biāo)題歸納題時(shí)還要遵循三個(gè)原則，即注意題的醒目性、概括性和針對(duì)性。醒目性——我們所判斷的標(biāo)題如果放在文章的最前面，應(yīng)該能使讀者一看到標(biāo)題就對(duì)其內(nèi)容發(fā)生興趣，即，吸引讀者的眼球；概括性——指標(biāo)題應(yīng)最大限度地覆蓋全文，囊括文章的主要內(nèi)容，體現(xiàn)文章的主題；針對(duì)性——我們所選的標(biāo)題不能偏題，必須指向具體文意，因此也應(yīng)具備強(qiáng)烈的針對(duì)性。