LONDON---The International Table Tennies Federation(ITTF) plans to work with Bill Gates, the chairman of Microsoft Corporation, to promote  table tennis in the United States, ITTF President Adham Sharara said. The plan was put forward after Gates came to London to watch the game between US teen player Ariel Hsing and Chinese Li Xiaoxia on Sunday, Sharara told Xinhua in an interview. Sharara didn't disclose the details, but said that Gates offered to help after watching Hsing's match, in which the 16-year-old girl nearly pulled off one of the biggest upsets in Olympic table tennis history, pushing No. 2 seed Li to the limit before losing 4-2 in six tight sets. "Gates was surprised to see the young American girl played so well. He asked me what he can do to help promote table tennis in the United States. I think we'll work with him. If the United States becomes very strong in table tennis, it's also good for China," Sharara said. Sharara said the case is a "good example" which shows that ITTF's efforts in promoting the popularity. The ITTF has changed its rules for the London Games, allowing only two players from one nation to enter the singles events. Three players from each National Olympic Committee(NOC) were allowed to enter the singles in previous Games. "The reason we do this is to help more NOCs to join in our game. If we give more chances to the top countries, someone like Hsing will not come to the Olympic Games. They have no chance. But if we give them the chance, we can see what they can do," Sharara said. Sharara said the change increased the pressure on strong teams, like China, Japan, South Korea and Germany. "But they understand now because they saw other NOCs attending. Some countries before had no chance to play in table tennis, but now they are joining in table tennis." Other changes made to the Olympic Games include the color of floor (from red to blue) and new table design. "As far as presentation is concerned, we try to change all the time, especially in the Olympic Games. We hope to give... Which of the following is ITTF's purpose of making changes to the London Games? A) To attract more local audience to the matches. B) To prevent strong table tennis teams developing. C) To promote the popularity of table tennis. D) To give Asian teams chances to join in the match.
C


(Question)
The next time you get caught jumping on your bed you can tell your parents with a straight face that you are not playing, simply getting ready got a promising career in "Mattress Jumping". Believe it or not, there are some people who actually get paid to do that! According to Reuben Reynoso, a professional mattress tester at San Francisco's McRoskey Mattress Factory that still makes every mattress by hand, it is real work and needs some training. For a start, it's not all about jumping to new heights or doing tricks like professional athletes, but rather about feeling each area of the mattress carefully to detect the filling. In order to do it right, every bit of the mattress has to be tested slowly and deliberately. Over the years, Reynoso has figured out the perfect routine. He begins by placing a protective mat over the mattress so that it doesn't get dirty or absorb the smell from his feet. Then begins the fun---he steps to the middle of an edge and then takes five steps back and five steps forward. In this way, he slowly but surely, covers the entire surface. The key according to him is to find the perfect number of jumps---Too many and he will end up destroying the mattress completely. Too few? And it will not fit into the giant machine for that final sewing! Who knew a job that sounds so simple could have so many skills! While Reuben will not reveal how he got into this profession, he will admit that it is more fun than being a carpenter, roofer, construction worker and railroad engineer---all jobs he has tried previous to finding his true profession! We can learn from the text that Reynoso   _  . A) has been injured several times in his work B) liked mattress jumping in his childhood C) didn't choose mattress testing as his first job D) dreamt about becoming a jumping athlete
(Answer)
C


When an ant dies, other ants move the dead insect out. Sometimes, the dead ant get moved away very soon--within an hour of dying. This behavior is interesting to scientists, who wonder how ants know for sure--and so soon--that another ant is dead. One scientist recently came up with a way to explain this ant behavior. Dong-Hwan Choe is a biologist. Choe found that Argentine ants have a chemical on the outside of their bodies that signals to other ants, "I'm dead--take me away." But there's a _ to Choe's discovery. Choe says that the living ants--not just the dead ones--have this death chemical. In other words, while an ant crawls around, perhaps in a picnic or home, it's telling other ants that it's dead. What keeps ants from dragging away the living ants?Choe found that Argentine ants have two additional chemicals on their bodies, and these tell nearby ants something like, "Wait--I'm not dead yet." So Choe's research turned up two sets of chemical signals in ants: one says, "I'm dead," and the other set says, "I'm not dead yet." Other scientists have tried to figure out how ants know when another ant is dead. If an ant is knocked unconscious, for example, other ants leave it alone until it wakes up. That means ants know that unmoving ants can still be alive. Choe suspects that when an Argentine ant dies, the chemical that says "Wait-I'm not dead yet" quickly goes away. Once that chemical is gone, only the one that says "I'm dead" is left. "It's because the dead ant no longer smells like a living ant that it gets carried to the graveyard, not because its body releases  new unique chemicals after death," said Choe. When other ants detect the "dead" chemical without the "not dead yet" chemical, they drag away the body. Understanding this behavior may help scientists figure out how to stop Argentine ants from invading new places and causing problems. Choe would like to find a way to use the newly discovered chemicals to spread ant killer to Argentine ant nests. The ants' removal behavior is important to the... The result of the research can be used to  _  . A) kill troublesome pests B) solve the problem of endangered species C) prevent further expansion of the ants' territory D) keep the balance of nature

C