The 48-year-old photographer and adventurer with his trademark black and white beard and shoulder-length hair is also an environmentalist devoted to protecting the source of the Yangtze River.And he likes his new nick-name, "garbage cleaner at the source of the Yangtze River". Yang Xin , is the founder of Green River, one of the country ' s biggest non-govemmental organizationsto protect the country's major rivers. The Yangtze River begins from glaciers in the Tanggula Mountains on the Qinghai-Tibet Plateau. Garbage was rarely seen in the area about 20 years ago, Yang said, as local nomadic people ledtraditional self-sufficient lives, living in tents. Thanks to increasingly convenient transportation, they ' ve started to use modern products packed in plastics, which can ' t degrade naturally. "They don' t have a waste management system and just throw rubbish away like before. So tons of garbage are left on the grasslands and river ways," said Yang. He founded a group with the purpose of dealing with garbage such as plastic bottles, batteries, lunch boxes and so on. In 1997, Yang and his group founded the Sonam Dhargye Nature Preservation Station in the Hoh Xil Nature Reserve, in memory of the anti-hunting hero who sacrificed his life to protect Tibetan antelopes. Why does Yang Xin get his nickname "garbage cleaner at the source of the Yangtze River " ? A) Because he is devoted to the care for the Yangtze River. B) Because he is a founder of the Yangtze River. C) Because he worked as a garbage cleaner. D) Because he is a photographer and an adventurer.
A
(Question)
Marjorie Gestring Marjorie Gestring was a springboard diver from the United States who won the gold medal in 3-meter springboard diving at the 1936 Summer Olympics in Berlin, Germany at the age of 13 years. With the cancellation of the Olympics in 1940 and 1944 because of World War II, Gestring did not get a chance to defend her title, and her comeback attempt for the 1948 Summer Olympics failed. Bob Mathias 17-year-old American Bob Mathias won the decathlon only four months after taking up the sport. He is the youngest athlete in Olympic history to win a men's track and field event. By the time Mathias retired from decathlon competition in 1952, he had nine victories in nine competitions. He had won two gold medals separately in 1948 and 1952. In 1954 a film about his early life called The Bob Mathias Story was made, in which he and his wife played themselves. Fu Mingxia Fu Mingxia was born on August 16, 1978 in Wuhan, Hubei Province. At an early age, her father taught her to swim at a nearby river. She started exercising gymnastics at age 5, soon turning to diving. Fu Mingxia left home at age 9 to train in Beijing. In the 1992 Summer Olympics held in Barcelona, Fu Mingxia became China's youngest Olympic champion ever when she won the 10-meter platform gold at the age of 13. Ian Thorpe Ian Thorpe was born on 13 October, 1982. He is a former Australian freestyle swimmer. At the age of 14, he became the youngest male ever to represent Australia. Ian Thorpe, 17 years old, won the gold medal in the 400m freestyle by breaking his own world record in Sydney 2000. He has won five Olympic gold medals. How many times has Marjorie Gestring taken part in the Olympic Games? A) Two. B) Three. C) Four. D) Five.
(Answer)
A
Ques: When a caterpillar feeds on a tomato leaf , the plant moves rapidly to meet with a defensive response , systematically releasing " proteinase inhibitors " -- proteins that interfere with the caterpillar's digestion -- throughout the plant , especially in the leaves . But how does the message get from the wounded leaf to the rest of the plant ? Most scientists believed the alarm was spread by chemical messengers until a team of researchers headed by David Weldon-- a biologist at the University of East Anglia in Norwich , England -- made a shocking discovery . An injured leaf , the researchers found , sends an electrical signal to warn neighboring leaves of upcoming danger . It's a " terribly tiny current " driven by an electrical potential difference of only 20 millvolts , says Weldon , who measured the voltage after electrodes were attached to the plant's surface . " Right now , all we can say is that there is a correlation , " Weldon notes . " If you wound the plant , you'll see an electrical signal accompanied by a biochemical response . " To learn more about the reaction , Weldon's team plans to insert electrodes within the pant tissue ( rather than on the surface ) to determine what's going on at the cellular level . The findings may help explain other mysteries surrounding plants . For example , many plants start to flower in springtime , as days grow longer , but plants sense the change in the day length through their leaves , while flowers begin to bloom at the buds . " There must be a signal from the leaf to the growing points , " Weldon says . " So far , no one has come up with a convincing chemical mechanism . Maybe an electrical signal is involved . " The best title of this passage is _ A) Electrical Tomatoes B) Endless Cycles of Plants C) A Debatable Research D) A Magic Role of Caterpillars
Ans: A
Ques:Maybe you've just invented something better than the iPhone or a solar-powered car. You don't want anyone to steal your design. What should you do? Patent it! Patents are the best way to get credit for your work and help others continue advancing in that field. Here's what you need to know. A patent gives you the right to an invention. The patent protects its owner, which means the invention can't be copied or sold without their agreement. In exchange, the owner must reveal information about the invention. This contributes knowledge that helps other inventors improve on their own research. A patent usually lasts about 20 years. The first step to getting a patent is the application. The person applying must name the invention, explain its use and describe it clearly. The invention must be practical and contain some new characteristic -- something that hasn't been seen or used before. But not everything "new" can be patented. Many countries don't allow patents on things like new concepts, scientific theories, medical procedures or substances already found in nature. You may not be able to see patents, but they're connected to nearly everything. There are patents on things you use every day, like plastic, medicine and your computer. There are patents on things that are unavailable on the market, too. Apple is well-known for its patents on potential products, such as the "iBike" or the "iKey". Of course there are also patents on inventions like this. Take the anti-eating face mask for example. This _ locks around your head with a metal cage covering your mouth. You can breathe and speak, but you can't eat! Although many patented inventions can be failures, there's plenty of room for success. So if you have a cool invention, try to patent it. We can infer that Apple's iBike is _ . A) a popular product B) a mere new concept C) a famous brand in the world D) a practical bike on the market

Ans:
B