Satellites play big roles in modern life. Some look downward to monitor environmental conditions on Earth.Others look outward in search of major solar flares that can trouble the transmission of electrical power to homes and businesses. Some spy on our enemies. Others relay communications around the globe. But all of these million-dollar wonders of technology can be knocked out by a collision with space junk ---debris ( )from satellites and other earthly technology orbiting high above the planet. Now,a teen from Jordan has designed a satellite to chase down space junk , collect it and then deal with it. Even bits of space junk as small as dots of paint pose a threat , says Dana. That's because this debris orbits our planet at speeds up to some 28,200 kilometers per hour. Such high speed explains why tiny paint dots have damaged the windshields of space shuttles so badly that they needed to be replaced. Researchers have come up with many ideas for getting rid of space junk. Some have suggested vaporizing small bits with lasers. Others have proposed launching satellites to collect the debris. Dana's design falls into this category. Here's how hers would work : A radar system aboard the satellite would scan and find a piece of space junk.Then,thrusters would change the satellite's orbit so that it could chase down _ . As the satellite closed in on its prey, cameras would keep it on target. At the last minute,a door that leads to a container would open. This container needs to be strong so that it doesn't break apart when the satellite swallows the space junk,Dana explains. Finally,when the trash container was full,it would be lowered toward the earth on a kilometer-long cable and its contents released into the upper atmosphere. There, the space junk would harmlessly burn up just like a meteor does. Meanwhile, her satellite would roll the container back up so that it could collect more trash. According to the Dana's design, space junk in her satellite _ . A) will be swallowed and stored in its trash bin B) will be broken apart in the trash container C) will be destroyed by heat in the upper atmosphere D) will be transported to the earth through a cable
C
You are standing in the kitchen and a voice says, "Add a little more salt to that soup." Yes, it's always nice to have someone help you when you're cooking. But this voice is not from a man. You are alone! Then where does it come from? Is it from a ghost? No, this isn't a ghost kitchen--it's the kitchen of the future. Scientists are working to improve everything in the kitchen, from fridges to tables, and even the ways we cook. They are making a system. It will help a person cook a meal. You don't need cookbooks. You can hear how to cook food. The fridge of the smart kitchen has a scanner. It looks at the foods in the fridge. It will order more milk from the store when your milk has gone bad or there is no more in the fridge. The gloves will test the temperature of everything they touch and say, "Need to cook longer" or "Hot and ready to eat". If you leave them on the stove by mistake, they'll say, "Fire!" Even the knives and spoons will speak. For example, if your food is bad, the knives and spoons will tell you not to eat it. The future kitchen may look wonderful, but it's not cheap. The multimedia fridge costs about 8,000 dollars. So even though high-tech kitchens are no longer a dream, not everyone can afford one. From the passage we know that _ . A) everybody can buy such a fridge B) not everybody can buy such a fridge C) nobody can buy such a fridge D) most people can buy such a fridge
B
Q: New York City plans to put a ban on the sale of large sodas and other sugary drinks at restaurants, movie theaters and street carts, in an effort to fight rising obesity. The ban would affect almost all the popular sugary drinks found in fast-food restaurants and even sports centers, from energy drinks to pre-sweetened iced teas. The sale of any cup or bottle of sweetened drink larger than 16 ounces would be forbidden under the first-in-the- nation plan. The measure would not apply to diet sodas, fruit juices, zero-calorie Vitamin Waters, dairy-based drinks like milkshakes , or alcoholic drinks; it would not expand to drinks sold in grocery stores or convenience stores. Stefan Friedman, spokesman for the New York City Beverage Association, criticized the city's plan, saying it turns focus away from the hard work that needs to be done on this front. Kelly Brownell, director of the Rudd Center for Food Policy and Obesity at Yale University, said he believes the ban would be effective. "It is not right to put all the blame for obesity on sugar drinks, but they are strongly connected with this rise in obesity over the last 30 years." Dr. Farley, the health commissioner, said the city had seen higher obesity rates in neighborhoods where soda consumption was more common. City officials said they believe it will finally prove popular and push governments around the U.S. to follow similar rules. Mr. Bloomberg has introduced a series of rules in his term of office, including bans on smoking in restaurants and parks, a ban on trans fat in restaurant food and a requirement for health inspection grades to be posted in restaurant windows. Because of the measures, the mayor was laughed at as Nanny Bloomberg, by those who view the bans as threats to personal freedom. But many of the measures adopted in New York have become models for other cities, including bans on smoking and trans fat, as well as the use of graphic advertising to fight smoking and soda consumption, and the demand that restaurants post calories contents... What's the best title for the passage? A) Sugar drinks are related to rise in obesity. B) Obesity is a big problem in New York City. C) It's unfair to put all the blame on sugar drinks. D) New York plans to ban sale of big sizes of sugary drinks.
A: D
For the last 10 years, job listing site CareerBuilder has put out a list called "The Most Unbelievable Excuses for Calling in Sick." For example, an employee said he couldn't come in because his false teeth flew out the window while he was driving down the highway. The excuses were gathered through a survey that ran among 3,000 workers and 2,000 hiring managers. The list is entertaining but there is a more serious issue hidden in this story. Federal law does not require private employers to give any paid sick leave, making the US the only one of the world's wealthiest nations that doesn'tguarantee workers this right. Since 2006, cities and states have been adopting their own paid sick leave laws. California, Washington. DC and 13 cities including New York now require many employers to provide some sort of paid sick leave. But according to the Institute for Women's Policy Research, 39% of private employees still have no access to paid days off. In the CareerBuilder survey, 38% of respondents said they go to work when they're sick because they can't afford to miss a day's pay. The survey also shows that workers are taking a risk when they come up with _ excuses. Nearly one in five employers says they have fired an employee for calling in sick with a fake excuse. If you're spending the day at the beach while pretending to be ill, don't post about it on Facebook. Nearly one in four employers (24%) has caught an employee lying about being sick by checking social media. The motto of this story: If you really are sick, don't come to work and spread your bacteria around the office. But if you just want to stay home, go with "I'm running a fever." rather than one of these ridiculous excuses. What problem is exposed in the survey? A) Many employees have no access to paid sick leave. B) Private employers make their workers work extra hours. C) Some employees are not satisfied with their boss. D) Private employers sometimes break the Federal law.
A