根据下列材料，回答题"Salty"RicePlantBoostsHarvestBritishscientistsarebreedi

共享题干题根据下列材料，回答题 "Salty" Rice Plant Boosts Harvest British scientists are breeding a new generation of rice plants that will be able to grow in soil containing salt water. Their work may enable abandoned farms tobecome productive once more. Tim Flowers and Tony Yeo, from Sussex University's School of Biological Sciences, have spent several years researching how crops, such as rice, could be made to grow in water that has become salty. The pair have recently begun a three-year programme, funded by the Biotechnology and Biological Sciences Research Council, to establish which genes enable some plants to survive salty conditions. The aim is to breed this capability into crops, starting with rice. It is estimated that each year more than 10m hectares (公顷) of agricultural land are lost because salt gets into the soil and stunts (妨碍生长) plants. The problem is caused by several factors. In the tropics, mangroves (红树林) that create swamps (沼泽) and traditionally formed barriers to sea water have been cut down. In the Mediterranean, a series of droughts have caused the water table to drop, allowing sea water to seep (渗透) in Latin America, irrigation often causes problems when water is evaporated (蒸发) by the heat, leaving salt deposits behind. Excess salt then enters the plants and prevents them functioning normally. Heavy concentrations of minerals in the plants stop them drawing up the water they need to survive. To overcome these problems, Flowers and Yeo decided to breed rice plants that take in very little salt and store what they do absorb in cells that do not affect the plants' growth. They have started to breed these characteristics into a new rice crop, but it will take about eight harvests before the resulting seeds are ready to be considered for commercial use. Once the characteristics for surviving salty soil are known, Flowers and Yeo will try to breed the appropriate genes into all manners of crops and plants. Land that has been abandoned to nature will then be able to bloom again, providing much needed food in the poorer countries of the world.1.[不定向选择题]The attitude of the author towards the research project is_________.A.positive? B.negative? C.Suspicious? D.indifferent 2.[不定向选择题]Which of the following statements about Flowers and Yeo is true?A.They are students at Sussex Universit B.They are rice breeder C.They are husband and wif D.They are colleagues at an institution of higher learnin

1.参考答案：A
参考解析：作者对该研究项目的态度是________?A、肯定的，正面的?B、否定的，负面的C、怀疑的?D、无所谓的?[解 析]态度题。态度题目要看作者叙述和评论时所使用的词汇的褒贬色彩，在文章的最后一句可知“已经被抛弃的土地将会重新恢复生机，将给那些贫穷国家提供所需的食物”，所以作者的态度是肯定的，因此答案为A
2.参考答案：D
参考解析：下列有关Flowers和Yeo的说法哪一项是对的?A、他们是Sussex大学的学生。B、他们是种植大米的。?C、他们是一对夫妻。?D、他们是高等教育机构的同事。?细节题。利用题干关键词Flowers和Yeo可以定位到第二段“Tim Flowers and Tony Ye0，from Sussex University’S School of Biological Sciences，have spen several years researchin9…”，即“Flowers和Yeo，来自Sussex大学生物科学学院，花了很多年来研究……”，由此可知他们是大学的研究人员，所以正确答案为D。?3.[不定向选择题]The word affect in Paragraph 6 could be best replaced by_________.A.influence? B.effect? C.stop? D.present

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