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
考研
Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the dat
Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the dat
admin
2012-02-27
62
问题
Just over three years old and about four-feet tall. Methuselah is growing well. "It’s lovely." Dr. Sarah Sallon said of the date palm,whose parents may have provided food for the besieged Jews at Masada some 2 000 years ago. The little tree was sprouted in 2005 from a seed recovered from Masada, where rebelling Jews committed suicide rather than surrender to Roman attackers.
Radiocarbon dating of seed fragments clinging to its root, as well as other seeds found with it that didn’t sprout, indicate they were about 2 000 years old—the oldest seed known to have been sprouted and grown.
Sallon, director of the Louis L. Borick Natural Medicine Research Center at Hadassah Medical Organization in Israel, updates the
saga
of Methuselah in Friday’s edition of the journal Science.
One thing they don’t know yet is whether it’s a boy or girl. Date palms differ by sex, but experts can’t tell the difference until the tree is six or seven years old, Sallon said.
She hopes there’s a chance to use it to restore the extinct Judean date palm, once prized not only for its fruit but also for medicinal uses.
The researchers have had a look at the plant’s DNA, however, and found it shares just over half its genes with modern date cultivars(栽培品种).
"Part of our project is to preserve ancient knowledge of how plants were used," Sallon said in a telephone interview. "To domesticate them so we have a ready source of raw material. "
Her Middle Eastern Medicinal Plant Project is working to conserve and reintroduce plants to the region where they once lived.
"Many species are endangered and becoming extinct. Raising the dead is very difficult, so it’s better to preserve them before they become extinct," she said.
The oldest documented seed to be grown previously was a 1 300-year-old lotus, Sallon said.
The author seems to suggest that ______.
选项
A、the attempt to grow the Judean palm date will end in failure
B、the effort to reintroduce the Judean palm date is sure to pay off
C、the researchers are likely to create a new species of the Judean palm date
D、the researchers stand a chance of success to renew the Judean palm date
答案
D
解析
第五段说Sallon博士希望能够有机会复原已经灭绝的犹太海枣树。第六段说研究人员分析了Methuselah的DNA,但是发现它只有刚刚超过一半的基因和现在枣树品种相同。说明想成功可能不太容易。
转载请注明原文地址:https://kaotiyun.com/show/x7mi777K
0
在职申硕(同等学力)英语
相关试题推荐
AfterAteachinginXiamenUniversity’sMBAcenterforoverfiveyears,IBcometorealizethatCevenifpoliticalandeconomicb
A:Youseemtohavealotofworktodoinyouroffice.You’vealwaysbeenworkingovertime.B:______
Inthispartyouaretowriteacompositionofnolessthan150wordsabout"CollegeGraduatesWorkasVillageOfficials".Yous
Americanculturehasnotbeenimmunetoculturalinfluencesfromoutside.TheideaofdemocracycamefromtheancientGreeks:th
Americanculturehasnotbeenimmunetoculturalinfluencesfromoutside.TheideaofdemocracycamefromtheancientGreeks:th
BeforehighschoolteacherKimberlyRughgotdowntobusinessatthestartofarecentschoolweek,shejokedwithherstudents
Growingeconomicproblemswerehighlightedbyaslowdowninoiloutput.
Justoverthreeyearsoldandaboutfour-feettall.Methuselahisgrowingwell."It’slovely."Dr.SarahSallonsaidofthedat
A.XiamenisarapidlygrowingmoderncitywithavigorouseconomyB.MincuisineisoneoftheeightmostfamouscuisinesofChin
随机试题
电子商务最发达的美国早在(),已通过了《高性能计算机法规网络案》,其宗旨是建设信息高速公路。
A.6-磷酸果糖→1,6-双磷酸果糖B.3-磷酸甘油酸→丙酮酸C.丙酮酸→乳酸D.6-磷酸葡萄糖→6-磷酸果糖E.丙酮酸→乙酰CoA
A、门庄B、朱砂点C、翻口似盆状D、通天眼E、马头蛇尾瓦楞身花鹿茸鉴别的术语是
我国《宪法》规定公民的住宅不受侵犯。下列哪些选项属于便犯公民住宅的行为?(卷一/2008年第60题)
“因材施教”是人的发展的()对教育的要求。
CSMA协议可以利用多种监听算法来减小发送冲突的概率,下面关于各种监听算法的描述中,错误的是()。Ⅰ.非坚持型监听算法有利于减少网络空闲时间Ⅱ.1一坚持型监听算法有利于减少冲突的概率Ⅲ.P一坚持型监听算法无法减少网络的
下列各项中对“信息”理解不正确的一项是:根据文意,以下与信息的概念产生无关的是:
设X与Y是独立同分布的随机变量,均服从参数为p(0<p<1)的几何分布,求Z=max{X,Y}的概率分布。
Mostworthwhilecareersrequiresomekindofspecializedtraining.Ideally,therefore,thechoiceofan【C1】______shouldbemade
Colorisveryimportanttomostanimalsforithelpsthemtogetalongintheworld.Color【C1】______tomakeananimaldifficult
最新回复
(
0
)