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
31
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
【S2】
选项
答案
H
解析
此空格也是句意推测。文中提到了normal一词,显然空格中是非常态的植物,根据下文,可知是转基因植物。
转载请注明原文地址:https://kaotiyun.com/show/DPN7777K
0
大学英语四级
相关试题推荐
Americanuniversitiesarerushingtowardsawirelessfuture.Theyareinstallingnetworksthatletstudentsandteacherssurf(浏览
A、Toearnmoremoney.B、Togetfreeroomandboardforthesummer.C、Togetsomepracticalexperience.D、Toadiscountonclothi
Thenormalhumandailycycleofactivityisofsome7-8hours’sleepalternation(交替)withsome16-17hours’wakefulnessandthat
Thefirsttwostagesinthedevelopmentofcivilizedmanwereprobablytheinventionofprimitiveweaponsandthediscoveryoff
IntheUnitedStatestoday,thecostofhousingisveryhigh.Itisvery【B1】______topayonefourthtoonethirdorafamily’s
LetmebegintodaybysayingthattheAmericaneconomyisbasicallyacapitalisticeconomy.Oneoftheimportant【S1】______ofAme
A、Shethinksahairdryerisagoodgift.B、Shewantstoknowwhat’smakingallthenoise.C、Sheisn’tstarehowpracticalthem
A、Impatientbutthenreluctant.B、Indifferentbuttheninterested.C、Reluctantbutthenconvinced.D、Impatientbutthenaccepted
AccordingtoaGalluppoll(民意调查)in2001,Americans,forthefirsttimeintwelveyears,believethattherewaslessviolentcr
A、Movingofficefurniture.B、Paintingaroom.C、Havingaposter.D、Readinganewsbulletin.A
随机试题
噪声可使人听力损失、使人烦恼和影响人注意力的集中。()
A.通腑泄热,化痰祛瘀B.息风清火,豁痰开窍C.化痰通络,凉营开窍D.平肝息风,化痰通络中风中脏腑阳闭的治法是
关于肠梗阻临床表现的描述,下列说法正确的是
4月30日A厂广告及甲公司订单是什么性质?为什么?5月2日和5月3日A厂与甲公司双方的传真产生什么法律效果?
某家庭申请了25万元10年期住房抵押贷款,年利率为6%。该家庭在按月等额偿还4年后,于第5年年初一次偿还了本金6万元,则从第5年开始该家庭的月还款额减少了()元。
只能用于转账,不能支取现金的支票有()。
“可转换债券”可以在特定时间、按特定条件转换为()。
税后利润与股本总数的比率是()。
关于法律推理,下列说法不正确的是()
以下叙述中正确的是
最新回复
(
0
)