单选题When Jack eventually Uovertook/U the last truck he pulled over to the inside lane.

单选题Other garments use a nickel-and-titanium (镍和钛)shape-memory alloy to move shinning panels of fabric as if they are breathing, like coral (珊瑚) shifting with the tide. "Clothing becomes the interface to tell a story," says British haute tech (服装科技) designer Di Mainstone, an artist in residence at New York's Eyebeam studio. One of Mainstone's newest projects, Sharewear, stems from the idea that in today's fast-paced society, time for "intimate homey encounters" is limited. So Mainstone created a costume made up of modules inspired by icons of the home, like the armrest of a favorite sofa. In addition to looking cool, Sharewear is meant to evoke the idea that clothing serves both to shelter and to define us-just like our homes. "I wanted that esthetic of something that was very familiar." Mainstone says. Which of the following is Mainstone's thought according to the passage?A. Haute tech clothing can tell stories to people.B. Haute tech designs should look cool.C. Clothing serves both to shelter and define us.D. We often ignore the beauty in familiar things.

单选题UUp to now/U, we have tolerated self-destructive behavior and environmental vandalism on a global scale.

单选题______ urgent the situation may be, you will need to make one change at a time, and then move on.A. AsB. WheneverC. HoweverD. Whatever

单选题Foreign money can be converted into the local currency at this bank.

单选题The son was so concerned about the illness of his father.A. seriousB. happyC. luckyD. worded

单选题The view from my bedroom window was absolutely spectacular. A. general B. traditional C. magnificent D. strong

单选题I catch cold now and then .

单选题A small increase in the earth's temperature may bring about

单选题 Hair Detectives Scientists have found a way to use hair to figure out where a person is from and where that person has been. The finding could help solve crimes, among other useful applications. Water is central to the new technique. Our bodies break water down into its parts: hydrogen (氢) and oxygen. Atoms (原子) of these two elements end up in our tissues and hair. But not all water is the same. Hydrogen and oxygen atoms can vary in how much they weigh. Different forms of a single element are called isotopes (同位素). And depending on where you live, tap water contains unique proportions of the heavier and lighter isotopes of hydrogen and oxygen. Might hair record these watery quirks (古怪举动；怪癖)? That's what James R. Ehleringer, an environmental scientist at the University of Utah in Salt Lake City, wondered. To find out, he and his colleagues collected hair from barbers and hair stylists (发型师) in 65 cities in 18 states across the United States. The researchers assumed that the hair they collected came from people who lived in the area. Even though people drink a lot of bottled water these days, the scientists found that hair overwhelmingly (压倒性的) reflected the concentrations of hydrogen and oxygen isotopes in local tap water. That's probably because people usually cook their food in the local water. What's more, most of the other liquids people drink including milk and soft drinks contain large amounts of water that also come from sources within their region. Scientists already knew how the composition of water varies throughout the country. Ehleringer and colleagues combined that information with their results to predict the composition of hair in people from different regions. One hair sample used in Ehleringer's study came from a man who had recently moved from Beijing, China, to Salt Lake City. As his hair grew, it reflected his change in location. The new technique can't point to exactly where a person is from, because similar types of water appear in different regions that span a broad area. But authorities can now use the information to analyze hair samples from criminals or crime victims and narrow their search for clues (线索).

单选题This report Uconcerns/U a man who lives in London, but works in Paris.

单选题The steadily rising cost of labor on the waterfront has greatly increased the cost of shipping cargo by water.

单选题The North American desert, a vast belt of inhospitable terrain, stretches {{U}}erratically{{/U}} down the western side of the continent.

单选题The world champion suffered a sensational defeat.

单选题A local hypnotist (催眠师) offered his services, and Edgar readily accepted.

单选题It is laid down in the regulations that all members must carry their membership cards at all times.

单选题Unfortunately, the rate of his expenditure surpasses that of his income.

单选题General acceptance of 3-D films may prove hard to come by.A. obtainB. explainC. understandD. distinguish

单选题A．small number of firms have ceased trading. A．completed B．finished C．fulfilled D．stopped

单选题Can you give me a concrete example to support your idea?