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阅读下面这篇短文，短文后有2项测试任务：(1)第23～26题要求从所给的6个选项中为规定段每段选择1个正确的小标题；(2)第27～30题要求从所给的6个选项中选择4个正确选项，分别完成每个句子。 A new drug shows hope of conquering a form of leukemia by targeting the misbehaving cells two summers ago Douglas Jenson was so wiped out from battling chronic myelogenous(骨髓性的) leukemia(白血病) (CML) that he could do little more than sit by his window; watching the numbers on a thermometer rise and fall with the sun. Today thanks to an experimental drug called STI571 (brand name: Glivec), Jenson 67, is biking in Oregon and planning a trip to the Caribbean. "I feel wonderful," he says.2. So do his doctors. STI571, a "smart bomb" drug that targets leukemia cells without harming healthy ions, first made headlines last year when researchers announced that white blood counts had returned to normal in 31 out of 31 patients who had taken the pill. Last week scientists were hack reporting new data on just over 1000 patients. In one trial, more than 90 % of 532 people on the drug saw counts return to normal. And under microscopic examination, 28 percent showed no evidence of cancer left in their bone marrow.3. The drug even helped, although not as dramatically, some patients in the final "blast" phase of the disease, when survival is measured in months. STI571"has ignited the cancer-research field", says Dr Brian Druker, an Oregan Health Sciences University researcher who developed the drug with manufacturer Novartis.4. CML, diagnosed in 5100 Americans every year, is triggered when two chromosomes swap fragments of genetic information. CML starts with the mistaken swap of genes between two chromosomes. The resulting "Philadelphia chromosome" produces the mutant Bcr-Abl protein. Bcr-Abl transfers a phosphate from the chemical messenger ATP to other proteins. They initiate a flawed signal to white blood cells to replicate incessantly.5. STI571 returns blood counts back to normal for those patients with chronic myelogenous leukemia(CML) in a "smart bomb way" by targeting the protein that sends the message to make the white blood cells. Bone marrow transplants can work extremely well, but they’ re applicable only for a minority of patients; otherwise, standard treatment is the injectable drug interferon. Many patients, however, cannot tolerate the adverse effects, which include severe fatigue, weight loss and depression. The new pill works by deactivating the cancer cells’ growth signal. Side effects- nausea, eye puffiness, muscle aches have been relatively mild so far. Side effects of the drug ______.
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阅读下面的短文，文中有15处空白，每处空白给出4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 Plants still give us our oxygen. If every plant (51) , you’ll die too. Without plants, you can’ t breathe. But you also need energy. You need it to breathe and to move. In fact, you need (52) to live. Some of the first living things couldn’t (53) their own energy. They needed the energy of sunlight, but they couldn’t make it themselves. (54) could they get it There was only one answer at the (55) . That is still true today. Animals still have to get their energy from. plants. Plants keep you (56) . Sometimes we eat the plants (57) . But sometimes an animal eats the plants (58) , then we eat the animal. Apples and oranges grow on trees—plants. Bread comes from plants in a (59) . We get eggs from birds, but the birds eat plants. (Or they eat insects, and the insects have eaten plants. ) We can eat (60) from a deer, but the deer has eaten plants. We eat (61) , and the fish has already eaten plants. (Or it ate other fish—and they ate plants. ) We don’ t eat (62) , but we drink milk. And the cow has eaten the grass for us. Every part of your food comes from plants. When you eat part of an animal, ask yourself, what did this animal eat If it ate other animals, ask yourself, what did they eat You will always (63) a plant. So what is really keeping you alive The green plants of the world are catching sunlight for you. You are using the energy from our own (64) . You are (65) the sun.
Text 2 The haunting paintings of Helene Schjerfbeck, on show in the final leg of a travelling tour that has already attracted thousands of visitors in Hamburg and The Hague, may come as a surprise to many. Few outside the Nordic world would recognise the work of this Finnish artist who died in 1946． More people should. The 120 works have at their core 20 self-portraits, half the number she painted in all. The first, dated 1880, is of a wide-eyed teenager eager to absorb everything. The last is a sighting of the artist’s ghost-to-be; Schjerfbeck died the year after it was made. Together this series is among the most moving and accomplished autobiographies-in-paint. Precociously gifted, Schjerfbeck was 11 when she entered the Finnish Art Society’s drawing school. "The Wounded Warrior in the Snow", a history painting, was bought by a private collector and won her a state travel grant when she was 17．Schjerfbeck studied in Paris, went on to Pont-Aven, Brittany, where she painted for a year, then to Tuscany, Cornwall and St Petersburg. During her 1887 visit to St Ives, Cornwall, Schjerfbeck painted "The Convalescent". A child wrapped in a blanket sits propped up in a large wicker chair, toying with a sprig. The picture won a bronze medal at the 1889 Paris World Fair and was bought by the Finnish Art Society. To a modern eye it seems almost sentimental and is redeemed only by the somewhat stunned, melancholy expression on the child’s face, which may have been inspired by Schjerfbeck’s early experiences. At four, she fell down a flight of steps and never fully recovered. In 1890, Schjerfbeck settled in Finland. Teaching exhausted her, she did not like the work of other local painters, and she was further isolated when she took on the care of her mother (who lived until 1923). "If I allow myself the freedom to live a secluded life", she wrote, "then it is because it has to be that way. " In 1902, Scherfbeck and her mother settled in the small, industrial town of Hyvinkaa, 50 kilometers north of Hetsinki. Isolation had one desired effect for it was there that Schjerfbeck became a modern painter. She produced still lives and landscapes but above all moody yet incisive portraits of her mother, local school girls, women workers in town (profiles of a pensive, aristocratic looking seamstress dressed in black stand out ). And of course she painted herself. Comparisons have been made with James McNeill Whistler and Edvard Munch. But from 1905, her pictures became pure Schjerfbeck. "I have always searched for the dense depths of the soul, that have not yet discovered themselves", she wrote, "where everything is still unconscious-there one can make the greatest discoveries. " She experimented with different kinds of underpainting, scraped and rubbed, made bright rosy red spots; doing whatever had to be done to capture the subconscious-her own and that of her models. In 1913, Schjerfbeck was rediscovered by an art dealer and journalist, Gosta Stenman. Once again she was a success. Retrospectives, touring exhibitions and a biography followed, yet Schjerfbeck remained little known outside Scandinavia. Th_at may have had something to do with her indifference to her renown. "I am nothing, absolutely nothing", she wrote. "All I want to do is paint". Schjerfbeck was possessed of a unique vision, and it is time the world recognised that. Why did Schjerfbeck choose to live a secluded life
何谓肺肉质变，如何形成
试述新生儿呼吸窘迫综合征肺部的病理变化。
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