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| — If he _____, he _____ that poisonous food. — Luckily he came back to life immediately. |
[ ] |
| A. was warned; would not take B. had been warned; would not have taken C. would be warned; had not taken D. would have been warned; had not taken |
Wide World of Robots
Engineers who build and program robots have fascinating jobs. These researchers tinker (修补) with machines in the lab and write computer software to control these devices. "They&39;re the best toys out there," says Howle Choset at Carnegie Mellon University in Pittsburgh. Choset is a roboticist, a person who designs, builds or programs robots.
When Choset was a kid, he was interested in anything that moved--cars, trains, animals. He put motors on Tinkertoy cars to make them move. Later, in high school, he built mobile robots similar to small cars.
Hoping to continue working on robots, he studied computer science in college. But when he got to graduate school at the Califomia Institute of Technology in Pasadena, Choset&39;s labmates were working on something even cooler than remotely controlled cars: robotic snakes. Some robots can move only forward, backward, left and right. But snakes can twist (扭曲 ) in many directions and travel over a lot of different types of terrain (地形) . "Snakes are far more interesting than the cars," Choset concluded.
After he started working at Carnegie Mellon, Choset and his colleagues there bagan developing their own snake robots. Choset&39;s team programmed robots to perform. the same movements as real snakes, such as sliding and inching forward. The robots also moved in ways that snakes usually don&39;t, such as rolling.
Choset&39;s snake robots could crawl (爬行) through the grass, swim in a pond and even climb a flagpole.
But Choset wondered if his snakes might be useful for medicine as well. For some heart surgeries, the doctor has to open a patient&39;s chest, cutting through the breastbone. Recovering from these surgeries can be very painful. What if the doctor could perform. the operation by instead making a small hole in the body and sending in a thin robotic snake？
Choset teamed up with Marco Zenati, a heart surgeon now at Harvard Medical School, to investigate the idea. Zenati practiced using the robot on a plastic model of the chest and they tested the robot in pigs.
A company called Medrobotics in Boston is now adapting the technology to surgeries on people.
Even after 15 years of working with his team&39;s creations, "I still don&39;t get bored of watching the motion of my robots," Choset says.
Choset began to build robots in high school. 查看材料
A.Right
B.Wrong
C.Not mentioned
| 阅读理解。 |
| Cold weather has a great effect, on how our minds and our bodies work. Maybe that is why there are so many expressions that use the word "cold". For centuries, the body's blood has been linked closely with the emotions. People who show no human emotions or feelings, for example, are said to be cold-blooded. Cold-blooded people act in a merciless way. They may dobrutalthings to others, and not by accident. For example, a newspaper says the police are searching for a cold-blooded killer. The killer murdered someone, not in self-defense. He seemed to kill with no emotion. Cold can affect other parts of the body, the feet, for example. Heavy socks can warm your feet, if your feet are really cold. But there is an expression-to get cold feet-that has nothing to do with cold or your feet. The expression means being afraid to do something you had decided to do. For example, you agree to be president of an organization. But then you learn that all the other officers have resigned. All the work of the organization will be your responsibility. You are likely to gel cold feet about being president when you understand the situation. Cold can also affect your shoulder. You "give someone the cold shoulder" when you refuse to speak to them. You treat them in a distant, cold way. The expression probably comes from the physical act of turning your back toward someone, instead of speaking to him face-to-face. You may give a cold shoulder to a friend who has not kept a promise: he made to you. Or, to someone who has lied about you to others. "A cold fish" is not a fish. It if a person. But it is a person who is unfriendly, unemotional and show no love or warmth. A cold fish does not offer much of himself to anyone. "Out in the cold" is an expression often heard. It means not getting something that everybody else got. A person might say that everybody but him got a pay raise. He was left out in the cold. And it is not a pleasant place to be. |
| 1. The text is intended to tell us that _____. |
| A. cold weather has a great effect on human bodies B. "cold" is a word closely linked with human emotions C. many English expressions contain the word "cold" D. the word "cold" has many different meanings in English |
| 2. The underlined word "brutal" in paragraph 1 most probably means _____. |
| A. Cold-blooded B. illegal C. impolite D. extreme |
| 3. Which phrase can best describe a person who is unwilling to offer anything to others？ |
| A. Cruel. B. To get cold feet. C. A cold fish. D. A cold shoulder. |
| 4. If the teacher gives all the boys except Tom a pen as a prize, you can say he _____. |
| A. is given the cold shoulder B. is punished by a cold fish C. has got cold feet D. is left out in the cold |
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