Read the following article and select the best answer. Article: No matter what he is doing,every human being gives body heat.The usual problem is how to _ it.But the designers of the Johnstown campus of the university of Pittsburg set themselves the opposite problem--how to collect body heat.They have designed a collection system which uses not only body heat but also the heat given off by such objects as light bulbs and refrigerators as well.The system works so well that no conventional fuel is needed to make the campus's six buildings comfortable. Some parts of most modern buildings--theatres and offices as well as classrooms-are more than heated by people and lights and sometimes must be air-conditioned even in the winter.The technique of saving and redistributing it is called "heat recovery".A few modern buildings recover heat,but the university's system is the first to recover heat from some buildings and reuse it in others. Along the way,Pitt has learned a great deal about some of its heat producers.The harder a student studies,the more heat his body gives off.Male students emit more heat than female students,and the larger a student,the more heat he produces.It is tempting to conclude that the hottest prospect for the Johnstown campus would be a hard-working,overweight male genius. Question: According to the passage,the following statements are true EXCEPT_. - fat,male and hard-working students give off more heat - six buildings are heated by the heat system on the prefix = st1 /Johnstowncampus - the heat is supplied by human bodies,other heat-omitting objects - the heat from human bodies,other heat-omitting objects is only used in cold winter
the heat from human bodies,other heat-omitting objects is only used in cold winter

Read the following article and select the best answer. Article: Printing images is easy. Just select an image of a purple robot on your PC, for example, and press print. Your home printer exactly shoots drops of ink onto a flat piece of paper, creating the robot's 2-D image. "Printing" 3-D objects is different. Take the purple robot. First select a file of the 3-D printer. Immediately, the printer begins making noise, and a nozzle releases plastic material in thin layers. In two or three hours, a 3-D purple robot is standing before you. 3-D printing has developed to the point where printers can now create high-quality objects using a variety of materials, including metals. That means 3-D printers can now make final products that meet high industrial standards. 3-D printers are already being used to make parts for racecars and jets as well as man-made limbs and hearing aids. So far, few homes have 3-D printers. That's because 3-D printing is not only new to most people but also quite expensive. To bring 3-D printing to the masses, some retail stores plan to offer the service. For example, the Staples chain of office supply stores has announced that it will offer 3-D printing in Europe beginning in 2013. Customers will be able to submit their own 3-D designs to Staples website for printing. After the job is done, they'll pick up their item at a nearby Staples store or have it mailed to their homes. This service is sure to encourage many more people to try out 3-D printing. Question: What do we learn about the 3-D purple robot? - How long it can usually last - How it can darken its own color - How it gradually takes shape - How much it costs to produce
How it gradually takes shape

Q: Read the following article and select the best answer. Article: HANGZHOU, China -- Millions of Chinese basketball fans who were upset about the retirement of Yao Ming, are excited to see another even more shining star, Jeremy Lin, rising from the N.B.A and becoming a household name all across China. "We are amazed by Lin Shuhao's magic performance and should cheer him on," one Internet user wrote. "His sport shirts have sold out, even including the counterfeit ones," said Zheng Xiaojun, a 24-year-old clerk. Lin's amazing success over the last month has caught the imagination of the Chinese. He has been particularly popular here in northern Zhejiang province, from which his grandmother went to Taiwan in the late 1940s. Cai Qi, a well-known micro blogger, posted a message on micro blog over the weekend stating that Lin's hometown is Jiaxing, a city near Hangzhou where Lin's grandmother grew up. Cai Qi's nephew Yu Guohua, a 56-year-old factory worker, is Lin's closest still living in northern Zhejiang. He said in a telephone interview that Lin had come to play basketball with the Jiaxing High School team last May and had been surrounded by admirers. Yu said he did not have a chance to meet Lin in the crowd, but managed to speak with his family. "His father was very supportive of Lin's playing basketball, but his grandmother was not, for fear he would be injured," Yu said. Lin may owe his height, 6 feet 3 inches, to his grandmother's family, Yu said. Chen Weiji, the father of Lin's grandmother, was well over 6 feet and all of Chen's children were tall as well, he said. The N.B.A. believes that 300 million people in China play basketball. The retirement last year of Yao Ming took its main Asian draw away from the N.B.A. But Lin's appearance has helped the league remain a hot topic of Chinese online chatter. Question: Which is the best title of the report? - The Secret of Lin's Success - A - Lin and His Family - Chinese Players in N.
A: A

Read the following article and select the best answer. Article: When you watch TV programs about wild animals, it is surprising to see how an antelope can escape a lion's attack. In the wilderness, everyone has a stunt. Even plants have their own ways of fighting off enemies. Over millions of years of evolution, plants have developed a unique defence system. Chemicals are wildly used for survival. By making their leaves, flowers, roots and fruits distasteful or poisonous to enemies, plants can fight back. One such plant is the Golden Wattle tree. The British scientist David Cameron has found when an animal eats the tree's leaves, the amount of poison increases in the other leaves. "It's like the damaged leaves telephoning the others telling them to fight together against the enemy, " he said. The tree also sends defence messages to neighboring plants by giving out a special smell. Golden Wattle trees in the surrounding 45 meters will get the message and produce more poison within 10 minutes. Now, if an enemy eats too many of the trees' leaves, it will die. Every species of plant or tree is good at the production of a particular set of chemicals. A _ that can safely eat the leaves of one tree may be poisoned by its neighbor. In this way, plants have developed not only individual defence system, but also shared it with others. This makes it impossible for a single animal to destroy even a small area of forest. Question: Which of the following can be the best title of the passage? - Plants Fight back with Poisons - Plants Can Kill Animals - Animals and Plants - Lions and Antelopes
Plants Fight back with Poisons