首页
登录
职称英语
British scientists are breeding a new generation of rice plants that will be
British scientists are breeding a new generation of rice plants that will be
游客
2023-08-25
75
管理
问题
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 to become 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【C1】______which genes enable some plants to survive salty conditions. The aim is to breed this【C2】______into crops, starting with rice. It is estimated that each year more than 10m hectares of agricultural land are【C3】______because salt gets into the soil and stunts plants. The problem is caused by several factors. In the tropics, mangroves(红树林)that【C4】______swamps and traditionally formed【C5】______to sea water have been cut down. In the Mediterranean, a series of【C6】______have caused the water table to drop, allowing sea water to seep in. In Latin America, irrigation often causes problems when water is【C7】______by the heat, leaving salt deposits behind. Excess salt then enters the plants and prevents them functioning【C8】______. 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【C9】______use. Once the characteristics for surviving salty soil are known, Flowers and Yeo will try to breed the【C10】______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.
A)evaporated I)create
B)barriers J)capability
C)normally K)establish
D)economic L)ensure
E)excluded M)capacity
F)lost N)commercial
G)droughts O)appropriate
H)perfectly [br] 【C3】
选项
答案
F
解析
空前系动词提示所填词可能为动词的分词形式或形容词。备选项中动词的分词都不能与agricultural land构成合理的动宾关系,故所填词只能为形容词。根据常识可知,salt侵入土壤,阻碍植物的生长会使agricultural land(农业用地)减少。备选项中的形容词用在句中符合句意要求的只有F)lost。如果不了解lost的形容词用法而将其归结到动词的过去分词的话,很难做对本题.
转载请注明原文地址:https://tihaiku.com/zcyy/2956412.html
相关试题推荐
Agenerationofe-mailing,followedbyanexplosionintexting,haspushedt
Agenerationofe-mailing,followedbyanexplosionintexting,haspushedt
Agenerationofe-mailing,followedbyanexplosionintexting,haspushedt
ABritishstudyhasfoundthatBvitaminscanreducebrainshrinkageinolde
ABritishstudyhasfoundthatBvitaminscanreducebrainshrinkageinolde
ABritishstudyhasfoundthatBvitaminscanreducebrainshrinkageinolde
ABritishstudyhasfoundthatBvitaminscanreducebrainshrinkageinolde
ABritishstudyhasfoundthatBvitaminscanreducebrainshrinkageinolde
[originaltext]Cananimalsbemadetoworkforus?[32]Somescientiststhink
AteamofGermanscientistshastakenpicturesofanancientfishthatwast
随机试题
Writeanoteofabout50-60wordsbasedonthefollowingsituation:You
Whyiseverycompanysomuchinterestedintheprocessofcustomersatisfact
Thestudentsaidtherewereafewpointsintheessayhe______impossibletocomp
近年来,随着中国政治及经济实力的不断提升,学中文的外国人越来越多。Inrecentyears,asChina’spoliticalandecono
下列关于涂布印刷纸的表述中,错误的是()。A.涂布印刷纸是对原纸进行涂布加工而
患者女,23岁。有慢性贫血史2年,近半年乏力,心悸加重,血常规示红细胞22×10
血管内皮细胞分泌的促止血物质是A.前列环素(PGI)B.血栓调节蛋白(TM)C.
可以用来表示同种药物不同制剂被机体吸收程度的指标是A.生物利用度B.表观分布容积
串补装置的旁路断路器及隔离开关宜采用遥控操作。
纪录片《大国崛起》中评述,牛顿缔造了工业革命的钥匙,瓦特拿着这把钥匙打开了工业革
最新回复
(
0
)