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
92
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
【S3】
选项
答案
I
解析
此处应填动词。由第一段中的“The normal plants lost their green color(普通的植物渐渐褪去绿色) ”可知转基因植物保持了它们新鲜的颜色。
转载请注明原文地址:https://kaotiyun.com/show/JPN7777K
0
大学英语四级
相关试题推荐
Icameacrossanoldcountryguidetheotherday.Itlistedallthetradesmenineachvillageinmypartofthecountry,andit
TheUnitedStatesremainsthemostpopular【B1】______forforeignstudents,butitsshareofthe【B2】______internationaleducat
Peopleusetheirmouthsformanythings.Theyeat,talk,【B1】______andsing.Theysmileandtheykiss.IntheEnglishlangua
A、Hewascheerfulandexcited.B、Hewastired.C、Heseemedverysad.D、Heseemedfrightenedbyhisstrangesurroundings.A
Thetaskofbeingacceptedandenrolledinauniversitybeginsearlyforsomestudents,longbeforetheygraduatefromhighscho
Thetaskofbeingacceptedandenrolledinauniversitybeginsearlyforsomestudents,longbeforetheygraduatefromhighscho
IntheUnitedStatestoday,thecostofhousingisveryhigh.Itisvery【B1】______topayonefourthtoonethirdorafamily’s
Oneofthegoodthingsformeninwomen’sliberationisthatmennolongerhavetopaywomentheold-fashionedcourtesies.I
Researchersfoundfamilyinfluenceddelinquency.Attachmentandinvolvementwereboth【S1】______relatedtodelinquency.Children
AccordingtoaGalluppoll(民意调查)in2001,Americans,forthefirsttimeintwelveyears,believethattherewaslessviolentcr
随机试题
在Windows7中,对话框由多个部分组成,写出如题47图所示“文件夹选项”对话框中指定的5个部分的名称。(1)___________(2)___________(3)___________
女性,41岁,厌食,恶心,全身皮肤黏膜黄染2个月。无出血倾向。肝脾不大。Hb60g/L,有少许球形红细胞。尿胆红素阴性,尿中尿胆原阳性,尿潜血检查阴性。血清间接胆红45mg/dl,直接胆红素正常。肝功能试验正常男性,26岁,因反复发作性酱油色尿来诊,发
[2008年,第44题]在一定温度下,某反应的标准平衡常数Kθ的数值()。
压缩空气管道安装完毕后,应进行强度和严密性试验,试验介质一般为()。
按照《公路工程程国际招标文件范本》的相关规定,投标人的投标文件必须包括()
路基填料的工程性质包括()。
某随机事件最多只有X、Y、Z三种互不相同的结果,关于X、Y、Z发生的概率,下列各项有可能的是()。
打开坚冰的闸门,“哇”的一声,春水哭了——为了一冬监禁的________,也为着春来自由的______。春水,__________地向前,以它新生的无比活力向前_________,撞击。它把一块块巨大的冰凌举起来,摔下去,再举起,再摔下,直至摔成粉末,融在
政府的教育投入不见得真正有利于学生。在20世纪70年代和80年代,美国政府用于教育项目的投入的总量增加了150%,而此期间,学生在标准考试中的成绩却逐年下降。上述论证基于以下哪个假设?
Enoughsleepisimportanttohealth.Theamountofsleep【C1】_______dependsontheageofthepersonandtheconditionsinwhich
最新回复
(
0
)