thirst (渴求) for knowledge didn't affect his professional activity and his family life. He spent 3 hours studying every day, and that was apparently all he needed to pass his exams and write his thesis.

4. Which of the following is true according to the passage?

A. Louis - Francois Berlin is on good terms with Baietti.

B. Baietti is the first Italian to break a Guinness record twice.

C. Nobody but Baietti has ever got more than one college degree.

D. Challenging himself opens up a broader world to Baietti.

5. Baietti can be best described as .

A. honest and considerate B. optimistic and generous

C. determined and hardworking D. reliable and imaginative

6. The key to Baietti's success is .

A. the support from his family B. his eagerness for fame

C. his nonstop daily learning D. his unusual brain and energy

7. What lesson can we learn from the story of Baietti?

A. Well begun is half done. B. Never too late to learn.

C. Take things as they come. D. Strike the iron while it is hot.

C

　We are lucky to live in a world that is full of incredible technology. Our living rooms are packed with computers, LCD TVs, video game systems, and Blue-ray players that help us enjoy the latest entertainment. Although these items bring us joy and convenience, they also create a lot of junk. Each device needs its own plug and adaptor to keep its batteries recharged, and over time these wires get tangled (缠绕在一起的). Thankfully, something has come along to help rid our homes of this mess while still supplying these devices with the power they need. It's called wireless charging and this trend is just starting.

Wireless charging has a lot of potential for smartphones and other electronic devices. Electronic devices can absorb the electricity once they're placed on a special charging mat. There are several advantages that wireless charging offers over traditional methods. For starters, cords (电线) have a tendency to wear out with use. Wireless charging users never have to worry about buying replacement cords. Wireless charging is also far more convenient for medical implants, as patients won't need to recharge their devices through the skin using cords. In turn, this cuts down on the risks of infection. Wireless charging can also bring safety benefits, as wired charging devices that come in contact with water can increase the chances of getting an electric shock. Wireless charging gets rid of that danger completely.