Unit 3 A healthy life language points课时作业

第一节(共10小题；每小题2. 5分，满分25分)

阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳选项。

Thanks to this new hands free suitcase，carrying around heavy luggage may soon become a thing of the past. Designed by Israeli company NUA Robotics，this smart suitcase is the technological equivalent of Mary's little lamb-it'll follow you everywhere you go.

The carry­on suitcase，currently a prototype，connects to a smartphone app via bluetooth. It has a built­in camera sensor that can "see" you and follow you around on flat surfaces like airport floors. It comes with an anti­theft alarm to prevent someone snatching it away when you're not looking and it has a backup battery that you can use to charge all your devices.

"It can follow and carry things for people around while communicating with their smartphone，and avoiding obstacles，" explained Alex Libman，founder of NUA Robotics. "We're combining sensor network，computer vision，and robotics. So if you download our app and press the 'follow me'button，the luggage recognizes the specific user and knows to follow and communicate. "

NUA is still testing the device and trying to improve features like speed and customization，but they hope to make the suitcase available to customers in a year's time. If it proves successful，they want to use the bluetooth pairing technology to automate lots of other devices，like shopping carts at the supermarket. These devices are especially meant to be useful to the physically disabled and elderly. "Any object can be smart and robotic，" Libman said，"We want to bring robots into everyday life. "

21．The carry­on suitcase has many functions except________.

A．following you upstairs

B．charging your smartphone

C．giving an alarm when it is stolen

D．avoiding obstacles automatically

答案　A　[细节理解题。根据第二段第二句"It has a built­in camera sensor that