There has been a large growth in the number of 3­D printers produced in the past year.Because of this increase, prices are much lower - several models cost less than $1,000.In addition to 3­D printers, there is now a new 3­D pen.It lets users draw 3­D objects.

　　Newly­developed robots

　　Robots are also shown at this year's show.Some of them help children learn computer programming.

语篇解读：本文是应用文。文章介绍了今年在拉斯维加斯举行的消费者电子产品展中参展的一些发明和创意。

　　5．What is the purpose of the Consumer Electronics Show?

　　A．To sell latest electronic products.

　　B．To share new ideas and inventions.

　　C．To collect money for new technologies.

　　D．To encourage new ideas and inventions.

　　解析：选B　细节理解题。根据文章第一段中的"Technology companies and experts from around the world come to the event to see, hear and talk about the latest ideas and inventions."可知，举办电子产品展的目的是促进新创意和新发明的推广和交流，故答案选B。

　　6．The prices of 3­D printers are falling mostly because ________.

　　A．many 3­D printers have been produced

　　B．a new kind of 3­D printer has been invented

　　C．most people now prefer 3­D pens to 3­D printers

　　D．people cannot draw 3­D objects with 3­D printers

　　解析：选A　推理判断题。根据文章倒数第二段的前两句可知，3D打印机大幅度降价是因为去年的产量大，导致供过于求，故答案选A。

　　7．Which of the following has not yet been invented according to the passage?

　　A．Ultra HDTVs.

　　B．Internet­connected stoves.

　　C．Rings that can reduce pain.

　　D．Robots that help kids learn.

　　解析：选C　推理判断题。根据文章五个小标题下的内容可知目前还没有发明出缓解疼痛的戒指，故答案选C。

　　C

We can express feelings and send sounds and pictures on our smartphones today.We