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
The researchers put all the plants in a greenhouse to grow under normal conditions for forty days. Then, for fifteen days after
The researchers put all the plants in a greenhouse to grow under normal conditions for forty days. Then, for fifteen days after
admin
2010-07-24
58
问题
The researchers put all the plants in a greenhouse to grow under normal conditions for forty days. Then, for fifteen days after that, the plants did not receive any【S1】______. The normal plants lost their green color. Finally, they lost their leaves. But the researchers say the【S2】______plants kept their leaves and their【S3】______.
After the fifteen dry days, all the plants were watered again for a week. The transgenic plants returned to【S4】______growth, and their seed production was close to normal But the other plants all died.
Rosa Rivera says the transgenic plants kept a【S5】______high water level. They also【S6】______to produce energy during the dry period, although at a reduced level. The amount of seeds they produced was close to normal. In addition, the researchers found that the plants could【S7】______on only thirty percent of the normal amount of【S8】______water. Yield loss was minor, they said.
The【S9】______appeared late last year in the Proceedings of the National Academy of Sciences. The University of California has applied for patent【S10】______for the technology. The researchers expect to move forward with field testing of the transgenic tobacco in late August. They hope for similar results with crops like tomatoes, rice, wheat and cotton.
A)similar I)color
B)keep J)production
C)water K)level
D)relatively L)findings
E)normal M)continued
F)survive N)protection
G)gained O)irrigation
H)transgenic
【S5】
选项
答案
D
解析
此处应填副词。前文中说转基因植物抗旱,能基本保持在一个相对高水分的水平。除此,没有副词可选。
转载请注明原文地址:https://kaotiyun.com/show/WPN7777K
0
大学英语四级
相关试题推荐
Theyovercameallthedifficultiesandfulfilledtheplantwomonthsaheadoftime,______.(这是我们没有预料到的)
Peopleusetheirmouthsformanythings.Theyeat,talk,【B1】______andsing.Theysmileandtheykiss.IntheEnglishlangua
A、Hewantedtomakeextramoney.B、HesawthatRobinwasyoungandrich.C、Hewasgoingtorowacrosstheriveranyway.D、Hefel
Asamediumofexchangemoneypermitstheseparationofexchangeintothetwodistinctactsofbuyingandselling,withoutrequi
Researchersfoundfamilyinfluenceddelinquency.Attachmentandinvolvementwereboth【S1】______relatedtodelinquency.Children
AccordingtoaGalluppoll(民意调查)in2001,Americans,forthefirsttimeintwelveyears,believethattherewaslessviolentcr
A、Annshouldshutthedoor.B、Annshouldbequieter.C、Annshouldhavestayedatthelibraryalittlelonger.D、Annshouldn’tha
A、Thereisn’taroomavailableatthattime.B、Aspeakeriscomingtoaddressthestudents.C、Languagetestingwilltakelonger
ValentineHistory,TraditionsandCustomsEveryFebruary,acrossthecountry,candy,flowers,andgiftsareexchangedbetwee
Asociety’seconomic【B1】______anditsculture,ortraditionsandwayoflife,also【B2】______theclothingthatitspeoplewear.I
随机试题
丙酮酸脱氢酶复合体中最终接受底物脱下的2H的辅助因子是
判断由于心律失常引起晕厥最好的方法是()
某家企业为出口创汇,生产了一种新型产品,每年净外汇流量为180万美元,该产品生产6年,从第四年起,每年净外汇流量在上年基础上增长10万美元,则其国民经济外汇净现值是()(社会折现率为10%)。
《电力法》第32条规定:“用户用电不得危害供电,()安全和扰乱其秩序。对危害其安全和扰乱其秩序的,供电企业有权制止。”
下列各项中,属于利得的是()。
税务登记,是纳税人对生产、经营活动向税务机关进行登记的法定手续。根据《税收征管法》的规定,税务登记包括( )。
品牌之所以具有资产价值,最根本的原因在于()。
参观游览出发前,导游员必须提前()分钟到达出发地点。
求助者的主要心理问题包括()。心理咨询师在这段咨询中的主要目的是帮助求助者()。
Quiteanumberofpeoplehavewrittentoaskme,"Howdoyoufacelife?Haveyoueverfeltlonely,lonely【C1】______thepointo
最新回复
(
0
)