Holding a cell phone against your ear or stalling it in your pocket may be hazardous to your health. This paraphrases a warning that cell phone; manufacturers include in the small print that is often tossed aside when a new phone is purchased.Apple, for example, doesn't want iP hones to come closer to you than 1.5 centimeters; Research In Motion, Blackberry's manufacturer, recommends 2.5 centimeters. If health issues arise from cell phone use, the implications are huge.Voice calls - Americans chat on cell phones 2.26 trillion minutes annually - generate $109 billion for the wireless carriers. Devra Davis, an epidemiologist who has worked for the University of Pittsburgh, has published a book about cell phone radiation, "Disconnect." The book surveys scientific research and concludes the question is not settled. Brain cancer is a concern that Ms. Davis examines. Over all, there has not been an increase in its incidence since cell phones arrived. But the average masks an increase in brain cancer in the 20-to-29 age group and a drop for the older population. "Most cancers have multiple causes," she says, but she points to laboratory research that suggests low-energy radiation could damage cells that could possibly lead to cancer. Children are more vulnerable to radiation than adults, Ms. Davis and other scientists point out. Radiation that penetrates only five centimeters into the brain of an adult will reach much deeper into the brains of children because their skulls are thinner and their brains contain more absorptive fluid. No studies have yet been completed on cell phone radiation and children, she says. Henry Lai, a research professor in the bioengineering department at the University of Washington, began laboratory radiation studies in 1980 and found that rats exposed to radiofrequency radiation had damaged DNA in their brains. Ms. Davis recommends using wired headsets or the phone's speaker. Children should text rather than call, she said, and pregnant women should keep phones away from the abdomen. According to the passage, how could children avoid being hurt by cell phone radiation? A) They can keep cell phones away from the abdomen. B) They can send short massage instead of making phone calls directly. C) They can pay more attention to the small print on the phone. D) They should use more advanced cell phones.
B
(Question)
Many people are concerned about the state of the earth in terms of its energy supplies and changing climate.The clear message broadcast by all responsible governments is that every person has a part to play.Here are some detailed instructions. 1.Prevent pollution by disposing of all your litter and waste in the correct,legal way,such as using onstreet waste receptacles when you are out and about,or putting it in your domestic rubbish can when you're at home.Follow local procedures for normal waste disposal.Contact your local authority for advice on disposing of unusual waste items,such as paint and computer parts. 2.Recycle all materials that can be processed by your local authority.Place plastics,metals,paper and glass in the correct collection receptacles.Donate unwanted items to the charities that are happy to accept good condition clothing,furniture and even automobiles. 3.Look after reserves of water by making sure you turn off the tap after use and by repairing leaks and drips.Purchase waterefficient appliances.Take showers instead of baths.Gather rainwater for garden use and use your lawn sprinkler less often or not at all. 4.Save energy by choosing Energy Star products.Turn these off,as well as lights,when you don't need them to be on.Use air condition and heating less often.Make sure your home is insulated correctly to maintain a steady temperature. 5.Reduce the amount of the material you use.Print emails occasionally or not at all rather than printing them every time.You buy new things when you actually need them rather than on a whim .Organize a car pool with friends to use fuel efficiently. In a word,we should try to use the world's resources efficiently to protect the environment. What's the main idea of the whole passage? A) How to protect the environment? B) Reduce the amount of the material you use. C) Some instructions in energy supplies. D) Why should each play a part in saving energy?
(Answer)
A
Ques: King's College Summer School is an annual training program for high school students at all levels who want to improve their English. Courses are given by the teachers of King's College and other colleges in New York. Trips to museums and culture centers are also organized. This year's summer school will be from July 25 to August 15. M ore information is as follows: Application date *Students in New York should send their applications before July 18, 2007. *Students of other cities should send their applications before July 16, 2007. *Foreign students should send their applications before July 10, 2007. Courses *English Language Spoken English: 22 hours Reading and Writing: 10 hours *American History: 16 hours *American Culture: 16 hours Steps *A letter of self-introduction *A letter of recommendation *The letters should be written in English with all the necessary information. Cost *Daily lessons: $200 *Sports and activities: $100 *Travels: $200 *Hotel service: $400 *You may choose to live with your friends or relatives in the same city. Please write to: Thompson, Sanders 1026 King' s Street New York, NY 10016, USA E-mail: KC-Summer-School@yahoo.com You can most probably read the text in _ . A) a textbook B) a newspaper C) a travel guide D) a science report
Ans: B
Question: "Developed and developing nations can learn from each other seeking a low-carbon economy. In terms of energy saving and green economy, China doesn't _ developed nations," said Zhou Changyi, director of the energy saving department of the Ministry of Industry and Information Technology. "While we can learn many aspects from developed nations, they also should learn something from us, such as water conservation," Zhou said in a speech during the new Path of China's Industrialization forum at the ongoing China International Industry Fair. He said industrialized nations and China are dealing with different issues to fight climate change. The United Kingdom, for example, is concerned about transport, buildings and new energy in reducing carbon emissions. For China, the most urgent task is how to realize new type of industrialization and avoid mistakes that other countries made when they industrialized. Swiss power and automation technology group ABB called for a stronger focus on product life-cycle assessment, or LCA, which is used to study the environmental impact of a product from the research and manufacturing stage through its usage and recycling. Tobias Becker, head of ABB' s process automation division for North Asia and China, said LCA is an effective tool in helping manufacturing industries to reduce carbon emissions. LCA shows that industrial customers should focus on a product's environmental impact throughout its life-cycle instead of on its initial investment. Richard Hausmann, North East Asia CEO of Siemens, said, "The color of future industrialization is green. " The Germany company recently announces that it wants to receive orders worth more than 6 billion Euros ( US 8. 8 billion) for intelligent power networks, Smart Grid, over the next five years. Siemens has set a 20 percent market share target for the global smart grid business. A smart grid delivers electricity from suppliers to consumers using digital technology, advanced sensors specialized computers that save energy, reduce costs and... What can be a suitable title for the text? A) Intelligent Power Networks B) Low-carbon Economy -a Shared Goal C) Two Biggest Markets for Smart Grid D) Developed and Developing Nations Can Learn from Each Other
Answer:
B