Q: French doctors and American scientists have reported doing an operation in which the doctor was outside the operating room. This kind of operation is known as robotic operation. Doctor Marescaux did the operation in an office in New York City last month, while a sixty-eight-year-old woman patient was in a hospital in Strasbourg, France. A doctor in Strasbourg got the patient ready. He placed medical tools and a small video camera in her stomach area. Doctor Marescaux in New York watched the patient on a video screen. Then he used the computer to send messages to the robot machine. The robot moved the tools that cut the woman's gallbladder away. The woman got well soon after the operation and left the hospital two days later. Experts say the main problem with such a robotic operation is based on high-speed telecommunications between the doctor and the robot. Technology must be able to send a doctor's order to a robot to move the tools quickly. Experts also say a successful robotic operation will improve an operation. For example, the robot can make much smaller movements than a person can. A robot machine can turn tools in ways that a doctor's hand cannot. Doctors say such a robotic operation will make possible safer and better operations in the future. They say it will improve doctor training. It will also mean that doctors could do an operation on people in dangerous places far away. And it could mean that people could have operations done by top doctors without having to travel to the city where doctors work. "Robotic operation" means " _ ". A) a special kind of robot invented by doctors B) an operation done far away C) an operation done with the help of a robot D) something done to mend a robot
A: C

Q: Since the 1970s, scientists have been searching for ways to connect the brain with computers. Braincomputer interface(BCI) technology could help people with disabilities send commands to machines. Recently, two scientists, Jose Millan and Michele Tavella from the Federal Polytehnic School in Lausanne, Switzerland, show a small robotic wheelchair directed by a person's thoughts. In the laboratory, Tavella operated the wheelchair just by thinking about moving his left or right hand. He could even talk as he watched the vehicle and guided it with his thoughts. "Our brain has billions of body cells . These send signals through the spinal cord to the body part to give us the ability to move. But spinal cord injuries or other conditions can prevent these weak electrical signals from reaching the body part." Tavella says. "Our system allows disabled people to communicate with outer world and also to control machines." The scientists designed a special cap for the user. This head cover picks up the signals from the scalp and sends them to a computer. The computer finds meanings of the signals and commands the wheelchair with an engine. The wheelchair also has two cameras that tell objects in its path. They help the computer react to commands from the brain. Prof. Millan , the team leader, says scientists keep improving the computer software that finds meanings of brain signals and turns them into simple commands." The practical possibilities that BCI technology offers to disabled people can be grouped in two kinds: communication, and controlling objects. One example is this wheelchair." He says his team has set two goals. One is testing with real patients, so as to prove that this is a technology they can get advantages from. And the other is sure that they can use the technology for long. BCI is a technology that can _ . A) help to make computer systems more modern B) connect the human brain with computers C) help the disabled to be healthier D) control a person's thoughts
A: B

Q: Mr. Jones is in Beijing. He's a teacher. And Mrs. Jones is an English teacher. They have a boy and a girl. They are Paul and Michael. Paul is five and Michael is only three months . Paul loves his sister very much. One day, Mrs. Jones' sister, Jane, comes to her family. She sees Michael for the first time . The boy shows his sister to Jane."Look at my sister," says Paul. "She's nice." "You're right, Paul," Jane says. "But what's her name?" "I don't know. She can't speak." _ people are in Mr. Jones' family. A) Two B) Three C) Four D) Five
A: C

Q: David is eight. One day his friend Rose says to him, "This Sunday is my birthday. Can you come to my birthday party?" David says, "Yes". On Sunday, David asks his mother if he can go to the party. His mother says, "Yes, you can go, but you must be polite. Don't ask for any food. They will give you some." "All right, Mum." David answers and he goes to Rose's house on his bike. There are lots of kids at the party. They play together for some time, and then Rose's mother gives them some food, but she forgets David. He waits and waits and then he takes his plate up and asks, "Do you want a nice clean plate?" David is Rose's _ . A) mother B) classmate C) brother D) friend
A: D