单选题The ______ driver thinks that accidents only happen to other people. A. general B. usual C. common D. average

单选题______ turned out to be the longest war the U.S. fought in history.

单选题It seems that you"ve caught a bad cold. You"d better see a doctor, ______ you?

单选题______ the geography class, Mandy went to the teacher and asked for the assignment.

单选题American parents living in large cities like to send their children to______because they believe that these schools are safer and have higher academic standards than “common schools”．

单选题______ you are familiar with the author"s ideas, try reading all the sections as quickly as you can.

单选题This new laser printer is ______ with all leading software.

单选题 Questions 56-60 are based on the following passage. It's an age-old dispute: Men are from Mars, women are from Venus. Males and females show different behaviors almost from birth. Researchers say these behaviors are due to basic differences in brain structure and activity. Studies show men are better at hitting targets and solving math problems while women are better at memorizing words and recognizing faces. Why the differences? A test of the brain's electrical activity shows that women commonly use both sides of their brain while men rely more on one. Scientists already know that the two sides of the brain control different functions--one controlling the sense of space, for example, the other controlling language. Some researchers believe that the different ways men and women use their brains evolved from ancient times, when cave men hunted and women cared for the children. Men had to have good aim. Women had to talk to the kids. Whatever be the explanation, the battle of the sexes continues. And although their brains are constructed slightly differently, men and women may be equally capable. They may simply rely on different abilities. Take a couple arguing over the location of their car in a parking lot. The man might use his sense of space to find it, while the woman relies on her recognition of landmarks. They both find the car. But chances are that they'll still argue about who's the better driver and who's better at finding the way home.

单选题There had been windows on the westerly side of the school, but they appeared to have been built up for a long time ______ of the workmanship on the outside.

单选题The five rings on the flag are Blue, Black, Red, Yellow and Green. In how many different ways could the rings have been arranged in colour order?

单选题{{B}}Section D{{/B}} This section consists of one passage followed by a summary. Read the passage carefully and complete the summary below by choosing no more than three words front the passage for each blank Remember to write the answers on the answer sheet. Questions 61 to 65 are based on the following passage. Taking a page from science fiction, engineers at the National Aeronautics and Space Administration's Ames Research Center at Moffett Field, in California, are developing small robot "buddies" that could tag along with astronauts and act as personal assistants. Developers envision little round robots about the size of grapefruit that are propelled by tiny fans through the weightlessness of a space station or shuttle. Hovering over the astronauts' shoulders and responding to voice commands, the devices, equipped with cameras, speaker, microphones and a variety of sensors, could serve as additional sets of eyes, ears and noses for the crew in space and the support staff on the ground, engineers say. As an astronaut works on an experiment with both hands in a glove box, for instance, the mechanical assistant could serve as a communications link with a researcher watching from Earth. The devices also could patrol the corridors of the space station, checking for gas leaks, smoke and unusual bacterial growth, or remind astronauts about the next tasks on their daily to do lists or of the need to send a birthday message to a loved one at home. Yuri Gawdiak, the principal engineer on the project, said the idea of the personal satellite assistant, or PSA, came to him after an experiment between the American space shuttle Atlantis and the Russian Mir space station in 1996. That mission showed that laptop and palmtop computers could use radio signals to exchange information on a wireless network without interfering with other electronic systems aboard the spacecraft. Afterward, astronauts told engineers that they wanted wireless palmtops, or even smaller portable data assistants, that could record and monitor data like the fictional tricorder devices popularized by the television series "Star Trek," Mr. Gawdiak said. "I took it a step further when I noticed that crews on missions left equipment to float around when they got busy," he said. "I thought they would like a device that would always face them when floating, perhaps something stabilized by gyroscopes. He said the idea evolved further when he saw astronauts on a shuttle mission demonstrate toys in weightlessness during an educational program. Small wind-up toys hopped and flew around the cabin with startling speed and ease, he said, spurring ideas of practical mobile devices. "Then I saw 'Star Wars' and there was a scene in the movie when the characters used a remote robot object--a fast moving ball--to practise with their light sabers, "he said. "And that gave me more ideas. " The device, as now envisioned, is a ball about five inches ( 12.5 centimeters) in diameter that is studded with sensors for rangefinders, motion detectors and position trackers to keep it from running into things or getting lost. The battery-powered PSA could move in any direction using six tiny enclosed propeller fans and have a flat-screen video panel on one side to display data. "This is small enough to be unobtrusive, and big enough to hold the technology that will be available in the next couple of years to do the job," Mr. Gawdiak said. It would be impossible for each PSA to carry the computing power and instruments for all the things people suggest these helpers could do, which is where the wireless data network comes into play. The robots would operate from a base station that would contain powerful computers for analy-sing sensor data, running speech-recognition and voice-synthesizer software, relaying communications and tracking the devices. The station also would contain docking ports for recharging the PSA's batteries and a variety of sensors that could be snapped onto the robots, depending on tasks assigned to them. Engineers at Ames completed a crucial test of the robots' components this month by mounting them on a hover plate and guiding them around a test table on a cushion of air. And the team has received financing to develop a prototype. "We hope to launch a personal satellite assistant in about two years aboard a space shuttle and in about three years aboard the International Space Station, "Mr. Gawdiak said. The space station, a $ 60 billion project involving 17 countries, will eventually house up to seven astronaut-researchers. Developers would like to use at least three PSAs on the station to demonstrate the technology, allowing the devices to work in formation to zero in on environmental problems. Summary : Grapefruit-sized robots may serve as personal assistants for astronauts. This idea came to Yuri Gawdiak after an experiment between {{U}}(61) {{/U}} astronauts. Scientists envision that the small robots shall perform tasks that range from patrolling to reminding astronauts to send a birthday message. The robots, or {{U}}(62) {{/U}} is powered by battery and {{U}}(63) {{/U}} by tiny fans. Equipped with {{U}}(64) {{/U}}, it can move with ease and shall not run into things. Since these robots cannot carry all the necessary instruments, wireless data network will enable the robots to operate from a base station. Researchers hope that PSAs shall operate on the {{U}}(65) {{/U}} in about 3 years' time and help solve environmental problems.

单选题The service industry is also called ______.

单选题The Australian federation has a ______ system of government. A. two-tier B. three-tier C. four-tier D. five-tier

单选题Police often conduct security checks in this area so they may stop you, and ______ you might be asked for your identity card or passport.

单选题—We’re all going to the New Skyline Restaurant for our end-of-year get-together. Can we count you in? ——Oh, thanks, Sara, but _____.

单选题_______does business with that fellow is _____to lose money.

单选题Betty: What were you upset about? Smith: It's a private matter. Betty: Why won't you tell me? Smith:______ Betty: Well, I hope you can. A. Don't worry. B. I don't want to say it. C. You can't be interested in it. D. I can deal with it myself.