1 . Remote controls are one of the most common symbols of our modern technologies. In fact, remote controls are an invention born in the 1800s. Famous inventor Nikola Tesla created one of the world’s first wireless remote controls, which he exhibited in public at Madison Square Garden in New York City in 1898.
Tesla called his system a “teleautomaton”, which could be used to control a mechanical device. For his demonstration, Tesla employed a minitype boat, which had a metal air wire that could receive exactly one radio frequency. He showed how his remote-controlled boat worked and whole process attracted many people. However, financially, Tesla’s remote-controlled boat was a failure. His intended client, the U.S. Navy, thought the technology was too easily damaged during use. But the concept of remote control caught on and quickly spread to many other types of equipment.
In the 1930s and 1940s, a new consumer electronics, such as garage door openers and model airplanes, arrived with remote controls. In the mid-1950s, Zenith engineer Eugene Polley designed his Flashmatic TV remote control, which used directional flashes of light to control the television. In 1956, Polley’s colleague, Robert Adler, created the Space Command control, which employed high-frequency, ultrasonic (超声的) sounds instead of light. This style of remote control increased the price of a new TV by a third, but that didn’t stop people from buying in mass quantities. Remote controls kept evolving, too. Ultrasonic sound remote controls were the standard for TVs until the 1980s, when remote controls began using the infrared (红外线) light signals that are very common today.
These days, you can find remote control capability built into a huge array of products such as toy cars and helicopters, video game consoles (控制台), ceiling fans, etc. There’s a good chance you can find a version that’s controlled by remote control. You can even buy a remote-controlled toilet.
Remote controls have allowed humans to perform many tasks that would be difficult, if not impossible. And although remote controls have a long history, they are anything but over. As we continue to introduce technology to every aspect of our lives, it’s very likely that we’ll need remote controls to keep things under control.
1. What made the U.S. Navy think poorly of Tesla’s remote-controlled boat?| A．Its high cost. |
| B．Its unsatisfactory quality. |
| C．Its damage to people’s health. |
| D．Its inaccuracy in sending signals. |
| A．Directional flashes of light. | B．Infrared light signals. |
| C．Various metal air wires. | D．High-frequency, ultrasonic sounds. |
| A．To advertise some modern inventions. |
| B．To prove the rapid evolution of kids’ toy. |
| C．To show the wide application of remote controls. |
| D．To show the principle of some high-tech products. |
| A．Human are too dependent on technology. |
| B．Remote controls are necessary in our life |
| C．Humans are trying to keep everything under control. |
| D．Remote controls will probably fade away in the future. |
| A．The history of remote controls. |
| B．The developments of our modern technologies. |
| C．The achievements of some great inventors. |
| D．The popularity of remote controls in our daily life. |
Marco Polo came from a wealthy family and received a good education. He was only six years old when his father and uncle left for a journey to China or Cathay, as it was called at that time. At the age of 17, Marco followed his father and uncle on their second journey to Asia.
The Polos traveled through many countries, over mountains and along the Silk Road, the main travel route for traders. Marco would keep detailed journals and record his findings. The Polos also stopped for a year in the Mongol region. There they learnt about the lives and culture of the people. This was useful as Marco was able to share what he had learnt with the Emperor of China, Kublai Khab. The Emperor was impressed with him. The Polos traveled 9,000 kilometres in more than three and a half years before reaching China. There Marco was most surprised to find the stones that burnt like logs. The Chinese had found a source of fuel that nobody in Europe could have imagined. It was called coal.
In 1298, Marco wrote a book called The Travels of Marco Polo which was a record of his travels in Asia. The book enabled the Europeans to understand and carry out trading activities more easily with Asians.
1. What was China also called in the past? (1 word)2. What was the Silk Road mainly used as in ancient times? (no more than 10 words)
3. What did the Polos do during their stay in the Mongol region? (no more than 12 words)
4. Why was Marco impressed with the stones? (no more than 6 words)
5. What is the main idea of the last paragraph? (no more than 10 words)
