题目内容：

In the future those who are taking care of old people may get help from the house itself.

Over the last few years, new technology, such as the Internet, Wi-Fi and flat TV screens, has changed our homes and the way that we live. Now, another technology revolution is happening. A new project at the University of Hertfordshire wants to create a home that monitors people living in it who are elderly.

The researchers have developed a wristband device（装置）which helps us to watch the elderly person who is wearing it. The device collects information to see if the person has fallen or has wandered away from where he or she should be.

The assisted-living project is part of the university’s wider Interhome project, which is the development of a smart house. The house remembers the habits of the person who lives there and it uses very low amounts of energy. The Interhome team hope that offering this service will help take care of the elderly. They say, “It’s very important that these technologies are there to help and support and not replace any of the existing services.”

The Interhome is not just a research method. It’s also a way for students from different scientific backgrounds to learn and develop technology. The university uses the latest technology to help students get experience by developing new hardware and software themselves. The team includes design, engineering and computer science students working together.

“We are working on a smart-home project in Watford with some companies at the moment,” says the project leader. “We are looking at how a smart home can provide even more services.” This could help millions of old people around the world have a better and safer life in the future.

1.The wristband device benefits its users by       .

A. changing the living habits of the elderly

B. monitoring people who live in a smart home

C. offering information to the person wearing it

D. watching over the elderly who may fall or get lost

2.Whom does the University of Hertfordshire have in its research team?

A. Students who want to find a job eagerly.

B. Students who prefer to work on their own.

C. Students from different scientific backgrounds.

D. Students with a lot of rich working experience.

3.What is the project leader’s attitude towards the future of the smart home project?

A. Uncertain.    B. Uninterested.

C. Optimistic.    D. Disappointed.

4.What might be the main idea of the passage?

A. A wristband device has changed the way that we live.

B. A smart home helps students develop hardware and software.

C. An Interhome project has been put into use to help the elderly.

D. An Interhome project will help the old live a better and safer life.