Read the article and select the best answer. Article: Many people say pennies are not worth saving. After all, a penny is only worth a cent. But one unusual penny turned out to be worth a lot more when a coin collector paid $1.7 million for it earlier this month. The coin is one of a kind. It is the only penny that the Denver mint made out of copper, instead of steel, in 1943. Because it is unique, it is also very valuable. No penny has ever sold for so much money. The Changing Penny The Lincoln penny first appeared in 1909. For 34 years, the one-cent coin was made out of copper. Then, in 1943, the penny changed. World War II was going on, and copper was needed for equipment. So for one year, pennies were made out of steel instead. At least most of them were. Only a few coins were made out of unused copper. There are three main mints, or places where coins are made, in the United States. Of the known copper pennies from 1943, twelve were made in the Philadephia mint, and five were made in the San Francisco mint. Only one was made in the Denver mint. Nobody knows for sure why a copper penny was made at the Denver mint in 1943, coin dealers Andy Skrabalak toldTime for Kids. "There is a rumor that a mint employee made the coin in the middle of the night." A Special Set The coin collector who bought the $1.7 million penny wants to remain unknown. But the reason for the trade is known. He already had two copper pennies from 1943 - one from the San Francisco mint and one from the Philadephia mint. To complete the set, he needed the Denver penny. The three coins will go on display at a coin exhibition in Tampa, Florida. The collector who sold the penny is also keeping his name a secret. It took four years to convince him to give up the rare coin. Now that he has finally donating all of the money to charity. Question: What can we learn about the collector who sold the penny? Options: A: He already had two copper pennies from 1943. B: He wanted to complete the set of copper pennies. C: He didn't want to sell his penny in the beginning. D: He was a well-known coin dealer in Tampa, Horida.
C

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Read the article and select the best answer. Article: Offering a powerful new tool against terrorism, researchers have found a way to detect lies in the liar's blushing face. The technique, described in the journal Nature, uses a thermal camera to detect the sudden shift of blood flow in the face. The system performed as a traditional polygraph , the scientists report. Pushed by technological advances and with fresh interest since Sept.11, the discovery is part of the development in the scientific study of detection. Although the lie remains a mysterious phenomenon, researchers in recent years have found a number of new methods that might take the place of the polygraph, from brain scans, to slight changes in eye movement, to sparks of electrical activity that signal a person has seen a victim or a crime scene before. The new finding says, when a person tells a lie, there is a sudden change of blood to the area around the eyes. Although the change is not ordinary visible, the blood warms the skin, causing bands of color1 to appear through a camera sensitive to heat. One advantage of the camera can provide answers quickly, and doesn't require a highly trained expert to operate it or explain its results. In theory, this new technology could be used anywhere large numbers of people need to be quickly screened. But some scientists say the technology would need to be improved before it is ready for use, for it is possible that there are other reactions that cause a sudden change in blood flow in the face and there is also the danger that people will learn to fool the machine, the same way they try to fool polygraph examiners by controlling their breathing or taking drugs to relax themselves. Question: Compared with a traditional polygraph, the new tool's progress lies in the fact that _ . Options: A: it is moveable B: it is easier to operate C: it gives correct conclusion D: it can only be used in public places.
(Answer)
B

Ques: Read the article and select the best answer. Article: Harry is eighteen now. He studies in a middle school.His parents like him very much and hope he can become a famous man. So they often tell him to study hard and they do almost everything for him. They wakes him up at six in the morning, after breakfast his father takes him to school in a car and in the afternoon, as soon as the young man comes back, the supper is ready. Of course, he never washes his clothes or goes to buy anything in the shops. Once Harry's father was sent to London on business. He would stay there for half a year. Upon leaving, he told his wife to take good care of their son. The woman had to get up eatlier and did all that her husband did before. And two months later she was so tired that she was ill in bed. Now the young man got into trouble. He couldn't do any housework. He had to do as his mother told him. He didn't even know where to get on the bus! One day Harry's mother found his shoes were worn out and told him to buy a pair in the shop. But he didn't know how to choose The woman had a sigh and give him a shoe patten and told him to buy a pair of.shoes himself. With a policeman's help, Harry found a shop. The shopkeeper was friendly to him. The man brought a lot of shoes and asked him to choose. When he was trying on a pair, suddenly he remembered something and took them off. The man was surprised and asked, "What's the matter, young man?" "I'm sorry. I've left the shoe pattern at home!" Question: _ always does some housework in the morning Options: A: Harry's father B: Harry's mother C: Harry D: Nobody
Ans: A

Read the article and select the best answer. Article: "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... Question: What do we know about LCA from the text? Options: A: LCA is used to study the impact on a product. B: LCA is one of the exhibitions at this year's fair. C: LCA can help manufacturing industries decrease carbon release a lot. D: LCA advises industrial customers to focus on the initial investment.
C