Question

阅读理解 　　Vegetarian vampires(吸血鬼)can breathe a sigh of relief．Scientists say they have discovered a way of squeezing “blood” out of rice． 　　Scientists successfully used rice seeds to produce the human serum albumin(人血清白蛋白)(HSA)in the lab, according to a study published in the Proceedings of the National Academy of Sciences from the US on October 31． 　　HSA is a kind of protein made by the liver to help transport certain hormones(荷尔蒙, steroids(类固醇)and fatty acids in the blood．People with serious burns, liver diseases and other medical conditions need more HSA． 　　Donated human blood used to be the only source of extra HAS, but this is in short supply．In China, demand for HSA is so high that some illegal producers have been found to be selling fake HSA, which made it even more urgent to find another source of the protein． 　　The rice method was developed by scientists at Wuhan University in China together with researchers from Canada and New York．They used bacteria to put the gene for making HSA into the rice plants and grew them over a few generations．In the final product, the HSA took up more than 10 percent of the total soluble(可溶的)protein in the rice seeds and could be easily separated from the rice protein． 　　The research team did several tests to compare the rice and human versions of HSA．They found that the two types of protein not only looked exactly the same but also had similar effects when used to treat illness．Both types of HSA proved equally effective in treating mice with liver disease．Moreover, mice that were given HSA derived(源自)from rice did not have stronger immune reactions(排异反应)than those that were given the HSA obtained directly from human blood． 　　“Scientists have been using plants to produce HSA for two decades, but the yield is too low,” said Yang Daichang, a scientist a Wuhan University, who led the research． 　　In this experiment, she said, it took researchers only two days to extract about 46 percent of the protein from the plant．This meant that 2.75 grams of HSA could be taken from every kilogram of brown rice．According to researchers, this amount is more than enough to make commercial production feasible(可行的)． 　　Yang said that the team hopes to begin testing the new HSA on humans within the next two years． (1) Which of the following about HSA is TRUE according to the article? [　　] A． It is a kind of hormone． B． It is produced in the kidneys． C． It helps make steroids and fatty acids in the blood． D． It is in short supply and demand cannot be met． (2) According to the article, ________ need more HSA than the others． [　　] A． those who are very thin B． those with serious burns C． those who donate blood D． those who have a headache (3) What did scientists find from the tests into the rice-derived HSA that were conducted on mice? a．The rice and human versions HSA looked much the same． b．Mice accepted the rice-derived HSA not worse than the human HSA． c．The rice-derived HSA can help mice with liver disease recover completely． d．The rice-derived HSA is as effective as human HSA for mice with liver disease． [　　] A． a, b, d B． a, c, d C． b, d, e D． b, c, e (4) The underlined word “extract”(Paragraph 8)probably means________． [　　] A． adapt B． obey C． obtain D． accomplish (5) What can be inferred from the last three paragraphs? [　　] A． The rice-derived HSA is expected to solve the shortage of HSA． B． the new technique enables scientists to get HSA easily, but the yield is too low． C． It has been completely proven that The rice-derived HSA also works well on humans． D． It has taken scientists ten years to finally find a way of using plants to produce HSA．

Answer 1

答案：1．D;2．B;3．A;4．C;5．A;
解析：

(1)	事实细节题。由第3段第1句“HSA is a kind of protein made by the liver…”可知B选项错误。由该句中“…to help transport certain hormones, steroids and fatty acids in the blood”可知A、C错误。由第4段第1句可知，D选项正确。
(2)	事实细节题。由第3段第2句可知。
(3)	事实细节题。由第6段第2句“not only looked exactly the same”可知a正确。由该句“but also had similar effects when used to treat illness”可知d正确。由该段最后一句“…did not have stronger immune reactions(排异反应)than…”可知b正确。故选A。
(4)	猜测词义题。结合下文be taken from和上文的表述，不难推出extract的意思为“提取”。故C项为正确答案。
(5)	推理判断题。综合三段内容，可推断出A选项。由倒数三段中“but the yield is too low”和“it took researchers only two days to”可知B是事实陈述，而非推论。由最后一段可知C错误。由倒数第3段第1句“for two decades”可知D错误。