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2015年职称英语考试模拟题—卫生类A级阅读理解3

来源:博大考神职称考试网 发布时间:2015-03-12
  本月3月28日职称英语就要开始考试了,考职称网整理了2015年职称英语卫生类A级考前模拟试题,愿各位考生顺利通过考试。"Salty" Rice Plant Boosts Harvests
  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.

Which of the following statements  about Flowers and Yeo is true?
A.They are students at  Sussex University.
B.They are rice breeders.
C.They are husband and  wife.
D.They are colleagues at  an institution of higher learning.


42、Flowers and Yeo have started a  programme_________.
A.to find ways to prevent  water pollution
B.to identify genes that  promote growth in salty soil
C.to breed rice plants  that taste salty
D.to find ways to remove  excessive salt from soil


43、Which of the following is NOT  mentioned as a cause of the problem discussed in the passage?
A.Natural barriers to sea  water have been destroyed.
B.The water table has gone  down after droughts.
C.Sea level has been  continuously rising.
D.Evaporation of water  leaves salt behind


44、The word "affect" in  Paragraph 6 could be best replaced by_________.
A."influence"
B."effect"
C."stop"
D."present"


45、The attitude of the author towards the  research project is_________.
A.positive
B.negative
C.suspicious
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