[2019·济南市针对性练习]Many people traveled to Las Vegas, Nevada during January 5th to 8th, 2017 for the 50th Consumer Electronics Show, or CES. The show is said to have the largest collection of new electronic devices in the world.
The show had many examples of “smart home” devices. “Smart home” technology is designed to make life easier for people by letting computers control many things inside their homes. One such device actually begins working outside the home, when someone arrives and rings the doorbell.
“When someone comes to your front door and rings the doorbell, the light can turn on immediately. I get a notification when I'm halfway around the world that someone came, and I can start talking to the person who's at my front door, and I can say, ‘Oh, here let me let you in.’ I can unlock the door for him very easily，” said Vivint, a smart home service provider.
One electronics maker launched a device that lets people see and interact with their animals when they are away. The device, from Petcube, lets you remotely watch and talk to your pet through a personal device, according to a company official. It can even give the pet a treat — if you approve and order it.
For heating or cooling, there is a smart thermostat. This device can also send you a message if a big storm causes leaks or flooding. “We're trying to catch it with just a few drips before it becomes a real big problem，” said Mike Sale of iDevices.
A concern for many homeowners is the possibility that someone else might find a way to attack these smart home devices. An official from Vivint said his company is sure that only owners of the home can gain use of information on the devices. Warren Katz from iDevices said his company employs engineers from the defense industry to help prevent hacking.
体裁：说明文 题材：科技与生活 主题：消费类电子产品展览会
【解题导语】 内华达州的拉斯维加斯于2017年1月5日至8日举办了第50届消费类电子产品展览会，其中的智能家居设备令人耳目一新。
【难句分析】 A concern for many homeowners is the possibility that someone else might find a way to attack these smart home devices.
分析：该句为主从复合句。句中“that someone else might find a way to attack these smart home devices”为that引导的同位语从句，解释说明possibility的具体内容。
译文：许多房主担心的是，可能会有人找到攻击这些智能家居设备的方法。
1．What can be learned about the show?
A．It created much attraction to consumers.
B．It has been held in Las Vegas many times.
C．It only exhibited smart home devices.
D．It is the largest show ever held.
答案与解析：A 考查细节理解。根据第一段“Many people traveled to Las Vegas，Nevada during January 5th to 8th,2017 for the 50th Consumer Electronics Show，or CES.The show is said to have the largest collection of new electronic devices in the world”可知，许多人前往内华达州的拉斯维加斯参加第50届消费类电子产品展览会，据说该展览展出了世界上最多的新型电子设备；结合下文介绍的“电子门铃”“智能恒温器”等可知，该展览会创造了很多吸引顾客的亮点，故A项正确。
2．What's the purpose of Paragraph 3?
A．To explain how to answer the door.
B．To illustrate a smart home device.
C．To tell a story about nice devices.
D．To introduce a home service provider.
答案与解析：B 考查目的意图。根据第三段中的“When someone comes to your front door and rings the doorbell，the light can turn on immediately.I get a notification when I'm halfway around the world that someone came, and I can start talking to the person who's at my front door”可知，当有人来到你的前门按门铃时，灯就会立刻亮起来；当我不在家的时候，我收到了一个通知，通知我有人来了，我可以开始和在我家前门的人说话。据此可知，该段旨在说明一种智能家居设备，故B项正确。
3．What may happen in the future according to the given examples?
A．Computers may replace human workers one day.
B．A stranger can come into your house even if you're out.
C．The house can repair for itself if a storm causes damage.
D．You can take good care of your animals while you're away.
答案与解析：D 考查推理判断。根据第四段第一句“One electronics maker launched a device that lets people see and interact with their animals when they are away”可知，一家电子产品制造商推出了一款设备，让人们不在家时也可以看到他们的动物，并与它们互动。据此可以推断，将来如果使用这种设备，你可以不在家时也能照颐好你的动物，故D项正确。
4．What can be inferred about the smart home device from the last paragraph?
A．Information on the devices is easy to get.
B．Many of the devices are not available now.
C．Homeowners are concerned about its operation.
D．Its safety can be guaranteed at present.
答案与解析：D 考查推理判断。根据最后一段第二句“An official from Vivint said his company is sure that only owners of the home can gain use of information on the devices”可知，智能家居设备公司确保只有房屋所有者才能使用这些设备上的信息。据此可以推断，目前这款智能家居设备是确保安全的，故D项正确。
