首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
A、To find the similarity of soybeans in the world. B、To protect soybeans against dry condition. C、To collect materials for their
A、To find the similarity of soybeans in the world. B、To protect soybeans against dry condition. C、To collect materials for their
admin
2016-08-25
73
问题
Thomas Tommy Carter is a plant scientist in North Carolina He works for the Agricultural Research Service in the United States Department of Agriculture. He leads Team Drought, a group of researchers at five universities. They have been using conventional breeding methods to develop and test soybeans that can grow well under dry conditions. Tommy Carter started working on drought-resistant soybeans in 1981. His research has taken him as far as China, where soybeans have been grown for thousands of years. Farmers in the United States, however, have grown soybeans for only about a century. Tommy Carter says the soybeans they grow are for the most part genetically similar. More differences, or diversification, could better protect crops against climate changes that can reduce production. Those changes include water shortages which could increase from global warming. The Agriculture Department has a soybean germplasm collection, a collection of genetic material passed from one generation to the next. Members of Team Drought studied more than 2,500 examples from the collection. They looked at ones from the ancestral home of soybeans, Asia. They searched for germplasms that could keep plants from weakening during hot, dry summers in the United States. Tommy Carter says they found only five. But these drought-resistant lines, he says, produce four to eight bushels more than normal soybeans under drought conditions. The yield depends on location and environment.
16 What is the purpose of Tommy Carter’s research?
17 Why did Tommy Carter go to China for his soybean research?
18 What do we learn about the five germplasm Tommy Carter’s team found?
选项
A、To find the similarity of soybeans in the world.
B、To protect soybeans against dry condition.
C、To collect materials for their papers.
D、To study the impact of global warming.
答案
B
解析
短文提到Tommy Carter的研究小组试图培育能在干旱条件下生长良好的大豆,之后又提到研究人员寻找在美国炎热干旱的夏季不易变得纤弱的种质,B与此相符,故正确。
转载请注明原文地址:https://kaotiyun.com/show/9TY7777K
0
大学英语四级
相关试题推荐
TheRiseoftheSharingEconomyA)Lastnight40,000peoplerentedaccommodationfromaservicethatoffers250,000roomsin30,0
TheRiseoftheSharingEconomyA)Lastnight40,000peoplerentedaccommodationfromaservicethatoffers250,000roomsin30,0
Parents’Homework:FindPerfectTeachersforKidsA)TomiHalldidwhatshecouldtolobbyforthebestteachersforhertwochil
A、Hegotaheartattack.B、Hewasunharmed.C、Hewasbadlyhurt.D、Hehasfullyrecoveredfromtheshock.B男士说:我那时吓坏了,但没有受伤,所以排除
A、Wherethecountriesare.B、Howtomakeatravelaroundtheworld.C、Whathetoldaboutisquitetrue.D、Howtofindtheblack
A、Sheisn’thavingmuchtrouble.B、Sheunderstoodthereadingyesterday.C、Sheunderstandsverylittle.D、Sheisgoodatintensi
A、PeopleofbloodtypeA.B、PeopleofbloodtypeB.C、PeopleofbloodtypeO.D、PeopleofbloodtypeAB.C细节题。文中提到,根据FurukawaTa
A、ThelifestyledepictedinHollywoodmovies.B、Theworshipofmoney,beautyandpleasure.C、Theattentionthemediafocuseson
TherowoveraPhiladelphiaschooldistrictaccusedofsecretlyspyingonpupilsthroughlaptopcamerasescalatedtodayafterit
考古发现(archaeologicalfindings)与史料证明,面条起源于中国;这种曾叫“汤饼”的主食,广泛存在于中国人的生活,已有四千多年的历史。面条是一种制作简单、食用方便、营养丰富的健康食品。由于地域迥异,面条的制作方法也多种多样;面条粗细不同
随机试题
行政主体对到期不履行义务的行政相对人加收滞纳金的行为属于()。
____是票据权利最终实现的标志,也是票据功能最终完成的标志。()
关于体液pH,下列说法正确的是
不属于胎盘激素的是
A.极面观呈三角形,赤道面观双凸镜形,具3副合沟B.类球形或长圆形,表面有点状条形雕纹,自两极向四周呈放射状排列C.球形,外壁具刺状突起,萌发孔3个D.圆球形,表面光滑E.类圆形,表面有网状雕纹
根据审计关系理论,与审计对象息息相关的是()。
当你把社会看作一个复杂的系统的时候,重视多种因素的动态协调,才会更好地促进社会的和谐。假如遇到问题,就从概念出发,进行简单的定性和判断,强求一致,非此即彼。这种思维的简单化、片面化、极端化,都与和谐社会的要求格格不入。这段话的主旨是()。
下列哪一个选项不属于公安机关内部工作运转秩序?()
ThepassengersonthebuswatchedwithsympathyasSusanmadeherwaycarefullyupthesteps.Shepaidthedriverandthen,usin
试分析我国法律规范的冲突及其解决机制。
最新回复
(
0
)