Boris Worm of Dalhousie University in Nova Scotia, Canada, led the international team that did the study. Professor Worm says species have recently been disappearing from oceans at increasing speed. At this rate, he says, all seafood species could collapse by 2048 and seafood supplies from the world's ocean could be almost gone by then. Other studies have also warned about the dangers of overfishing and the effects on ocean environments. But not everyone thinks the oceans are likely to be empty in fifty years. Some scientists said parts of the world do have problems, but others are doing a good job of protecting fish populations. Government officials in several countries with large fishing industries also questioned the research. The study appeared earlier this month in Science magazine. The researchers say damage to oceans affects not only fish populations but also the productivity of ecosystems. These complex systems help control water quality. The scientists say the loss of different kinds of sea life appeared to increase the risk of fish kills and beach closures from harmful algae growth. The scientists examined the results of thirty-two experiments and observed forty-eight protected areas. They also looked at records of catches worldwide. They studied records from the United Nations Food and Agriculture Organization for nineteen fifty to two thousand three. And they examined archeological information and other historical records for twelve coastal areas. That research reached back over a thousand years. Boris Worm says the findings were, in his words, "beyond anything we suspected." But he also said the situation is not too late to correct. He said that with good fisheries management, some species could completely recover in three to ten years. Which of the following isn't the damage to the ocean? A) The species of fish in the ocean are reducing. B) Sea water is polluted. C) Sea water quality is improved. D) Less productivity of ecosystem.
C

CHICAGO (Reuters) - Smoking not only can wrinkle  the face and turn it yellow -- it can do the same to the whole body, researchers reported on Monday. The study, published in the Archives of Dermatology, shows that smoking affects the skin all over the body -- even skin protected from the sun. "We examined non-facial skin that was protected from the sun, and found that the total number of packs of cigarettes smoked per day and the total years a person has smoked were linked with the amount of skin damage a person experienced," Dr. Yolanda Helfrich of the University of Michigan, who led the study, said in a statement. "In participants older than 65 years, smokers had significantly more fine wrinkling than nonsmokers. Similar findings were seen in participants aged 45 to 65 years," Helfrich's team added in their report. The researchers tested 82 people, smokers and nonsmokers, taking pictures of the inner right arms. They ranged in age from 22 to 91 and half were smokers. Independent judges decided how wrinkled each person's skin was. When skin is exposed to sunlight, notably the face, it becomes coarse, wrinkled and discolored with a pale yellow tint, Helfrich's team wrote. Several previous studies have found that cigarette smoking contributes to premature skin aging as measured by facial wrinkles, the study said, but little has been done to measure the aging of skin not exposed to light. The report did not discuss the mechanism involved but previous research has found that cigarette smoke, among other things, causes blood vessels beneath the skin to constrict , reducing blood supply to the skin. Smoking can also damage the connective tissue  that supports both the skin and the internal organs. It can be inferred from the study   _   . A) smoking won't make skin protected from the sun B) smoking will do damage to skin rather than other organs C) smokers over 65 usually won't worry about their skin D) the age of smokers is not connected with the result of the test
D

There is nothing in the US quite like Black Friday. Before midnight on Thursday, in malls across the US, people start queuing up outside the locked entrances of stores, making longer and longer lines, holding coupons  , sipping coffee and hot chocolate, rubbing their hands and stamping   their feet for warmth, excitedly chatting, and waiting for the clerks to open the door when the time arrives. Black Friday, the day after Thanksgiving, which fell on Nov 28,2014, "has become in recent decades a special American holiday", said the International Business Times. Indeed, up to 147 million Black Friday shoppers were expected to put up with the dark of night and the elbows of other shoppers so that they could bring home some bargains, according to the US National Retail Federation. But why does the shopping festival have such a name? The name was first used in Philadelphia in the 1970s. The streets and sidewalks of the city became so packed with traffic and crowds on the day after Thanksgiving Day that the local police did not look forward to it. Because of this, they called the day "Black Friday", said The Huffington Post. However, others believe that Black Friday takes its name from the fact that because of the increase in sales on the day, shops are able for the first time in the year to move out of the "red" - that is, debt - and into the "black", or profit. Businesses, of course, try to take advantage of this day. A decade ago, retailers   opened at 5 or 6 am. Now, many of the big stores open at midnight. People really seem to like the whole experience of queuing up before midnight, "for it isn't just about the bargains", noted CNN. "For many shoppers, it's just fun to be part of a large crowd. Those who go to the malls at midnight are driven by the same thing that makes a million people get together in Times Square each New Year's Eve." According to the article, people who queue up for Black Friday   _  . A) usually help each other to find good bargains B) have great fun as part of the waiting crowd C) have a lot of complaints about the service of the retail clerks D) have to wait until 5 to 6 am to start shopping
B

Anna Riviere was one of the most admired of 19th-century English sopranos . She was also one of the most adventuresome. She was born in London on January 9th, 1810. She entered the Royal Academy of Music at the age of 14. Seven years later, just after her first show, Anna married Sir Henry Bishop, who was 24 years her senior. Her reputation as a singer grew rapidly, based largely on her tours with Sir Henry and harpist Nicholas Bochsa. After a tour of Dublin, Edinburgh, and London, Anna Bishop deserted her husband and three children and ran away with Bochsa. From then on, Madame Bishop--as she continued to be known--traveled and sang as if her life depended on it. Between 1839 and 1843 she traveled to every major town in Europe, where she sang in 260 concerts. In the course of two years in Naples, she performed in 20 operas. In 1855 she and Bochsa sailed for Sydney, Australia. He died there the following year, and Anna went on to tour South America before returning to New York, where she married a diamond merchant. Then she began what proved her most dangerous adventure. After another American tour in 1866, she and her husband set sail across the Pacific. They were shipwrecked on a small coral reef, and for more than a month they drifted in a small boat before they finally reaching Guam. She had lost her music, her wardrobe, and her jewelry, but Madame Bishop was not to be stopped. She went on to Manila and began a concert tour that led to Hong Kong, Singapore, and India before she went back to England. After another two-year world tour she returned eventually to New York, where she gave her last public performance in 1883--at age 73. Meanwhile the husband she left behind, Sir Henry, had become famous for writing the music to lyrics that might eventually have been meaningful to Anna Bishop--"Home, Sweet Home." Sir Henry is a   _  . A) poem B) singer C) writer D) composer

D