单选题Chokwe Selassie is on a mission to help drivers avoid potholes (路面坑洼). The eighth-grader got his inspiration on a recent morning, when his mother was driving him to school. Their ear was damaged as it went over a huge pothole in the middle of the street in their hometown of Jackson, Mississippi. "I decided I was going to do something about the pothole problem in my city," said Chokwe. His solution: an app that warns drivers when there is a pothole ahead. Chokwe developed the app with his friends. "When the app detects a pothole, it is highlighted in red," Chokwe says. "And if you get close to the pothole, your phone will warn you with a beep." Drivers can also use the app to report any potholes they encounter, and to look for other routes they can take to avoid roads that have them. The app relies on current available information about the streets of Jackson. "It works by using the city"s 311 call system, so it uses: information already stored in a database," Chokwe says. Through the call system, citizens dial 311 to report non-emergency problems—which include potholes. As Chokwe and his friends worked on the app, they also went street by street throughout the city. They determined that focusing on the 10 busiest streets in Jackson would give them a large enough sample size to test it. Although the app isn"t yet available for sale, Chokwe is already looking for ways to improve it. The app remains limited to 10 streets in Jackson, but he hopes to add more, so that it includes every street in the city. And then he wants to go even farther. "I want to keep working on the app until it"s nationwide," Chokwe says.

单选题______ ten minutes earlier, you wouldn't have missed the train. But you were late. A. Had you come B. Did you come C. Have you come D. Should you come

单选题He does not ______ as a teacher of English, for his pronunciation is far from perfect.

单选题I should like to rent a house, modem, comfortable and ______, in a quiet place.

单选题People try to avoid public transportation delays by using their own cars, and this ______ creates further problems. A. in short B. in case C. in doubt D. in turn

单选题He looked through the pages of advertisements to find jobs ______ to college students during the summer holidays. A. obtainable B. available C. convenient D. essential

单选题{{B}}Passage 1{{/B}} Languages are remarkably complex and wonderfully complicated organs of culture. (76) {{U}}They contain the quickest and the most efficient means of communicating within their respective culture. {{/U}}To learn a foreign language is to learn another culture. In the words of a poet and philosopher, "As many languages as one speaks, so many lives one lives." A culture and its language are as necessary as brain and body: while one is a part of the other, neither can function without the other. In learning a foreign language, the best beginning would be starting with the non-language elements of the language: its gestures, its body language, etc. Eye contact is extremely important in English. Direct eye contact leads to understanding, or, as the English saying goes, seeing eye-to-eye. We can never see eye to-eye with a native speaker of English until we have learned to look directly into his eyes.

单选题I took the glass very carefully lest it______.

单选题Most of us trade money for entertainment. Movies, concerts and shows are enjoyable but expensive. (78) If you think that you can't have a good time without spending a lot of money, read on. A little resourcefulness and a few minutes of newspaper-scanning should give you some pleasant surprises.People may be the most interesting show in a large city. Stroll through busy streets and see what everybody else is doing. You will probably see people from all over the world; you will certainly see people of every age, size, and shape, and you'll get a free fashion show, too. Window-shopping is also a safe sport-if the stores are closed.Check the listings in your neighborhood paper. Local colleges or schools often welcome the public to hear an interesting speaker or a good debate. The film or concert series at the local public library probably won't cost you a penny. Be sure to check commercial advertise-ments too. A flea market can provide hours of pleasant browsing. Perhaps you can find afree cooking or crafts in a department store.Plan ahead for some activities. It is always more pleasant not to have people in front of you in a museum or at a zoo. You may save some money, too, since these places often seta side one or two free admission days at slow times during the week. (79) Pretend that you are a tourist from time to time, and get to know your city all over again including the indis-pensable (不可错过的) sights that people travel miles to see. If you feel like taking an in-teresting walk, find a free walking tour, or plan one yourself. You will see your city in anew perspective (视角) once you know more about its history or its architectural treas-ures. With imagination and a spirit of adventure you can quite easily find good entertain-ment at no cost at all.

单选题The project manager asked his assistant if it was possible for him to the investment plan within a week.

单选题Many children chose" Animal World" as their ______ TV programme.

单选题Doctor: What is your problem? Patient: ______

单选题Henry has never been to the Summer Palace, and it’s the place _____.

单选题Imagine a school that expected its students to become literate (有读写能力的) without any formal instruction. Most parents would be alarmed by such an approach, which would leave their children confused and with gaps in their understanding. This, however, has been the philosophy on character development in many of our schools. Why is the development of character seen as somehow different from the other skills that we teach? Of course there will always be learning by osmosis (耳濡目染) in any school, but as a teacher and primary school head I have found that a child"s moral literacy is strengthened when they acquire the building blocks of good character such as consideration, courage and honor: qualities which are commonly known as virtue (美德). I personally find that exploring a virtue over a two-week period provides a simple and effective program that allows for the creative input of both teacher and student and a chance for the virtue to embed (使融入) itself. Once a lesson on a virtue such as honesty has been completed we need to allow time for children to practice this concept just as would be the case with fractions or verbs. Allowing children to role play a situation such as making up excuses to cover a mistake can be enormously interesting, and the drama can be frozen allowing the characters to be questioned about their feelings and motives. It"s also a safe way for children to experience for themselves how a lie usually goes out of control. Our role as educators is also to look for opportunities to help our students as they attempt to strengthen their characters. When something goes wrong, we guide the young person to the virtue that will prevent it from happening again. For instance, when a student thoughtlessly disturbs the calm atmosphere of the library, instead of a response such as "That was really disrespectful and selfish of you!" we draw out from them the required virtue: "When you"re walking through the library, what virtues do you need to use?"

单选题Hard as they try, these birds have ______ small wings that they can not fly.

单选题______ with the size of the whole earth, the highest mountain doesn't seem high at all. A. When compared B. Compare C. While comparing D. comparing

单选题When we accept the evidence of our unaided eyes and describe the Sun as a yellow star, we have summed up the most important single fact about it--at this moment in time. It appears probable, however, that sunlight will be the color we know for only a negligibly (微不足道的) small part of the Sun"s history. Stars, like individuals, age and change. As we look out into space, we see around us stars at all stages of evolution. There are faint blooded dwarfs so cool that their surface temperature is a mere 4,000 degrees Fahrenheit; there are scaring ghosts blazing at 100,000 degrees Fahrenheit and almost too hot to be seen, for the great part of their radia-tion is in the invisible ultraviolet range. Obviously, the "daylight" produced by any star depends on its temperature; today (and for ages to come) our Sun is at about 10,000 de-grees Fahrenheit, and this means that most of the Sun"s light is concentrated in the yellow band of the spectrum, falling slowly in intensity toward both the longer and shorter light waves. That yellow "hump" will shift as the Sun evolves, and the light of the day will change accordingly. It is natural to assume that as the Sun grows older, and uses up its hydrogen fuel-which it is now doing at the spanking rate of half a billion tons a sec-ond-it will become steadily colder and redder.

单选题Anny: Do you still have a headache, Mike? Mike: Yes, I do. And now I have a fever and cough constantly. Anny: ______