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
29
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.
Which of the following can best summarize Sallon’s Plant Project?
选项
A、Discovering new species.
B、Protecting rare species.
C、Restoring extinct species.
D、Reforming existing species.
答案
B
解析
倒数第二段说很多物种已经濒危或即将灭绝,等它们不存在之后再想种植是非常困难的,所以最好在它们灭绝之前保护它们,即保护珍稀物种。
转载请注明原文地址:https://kaotiyun.com/show/D7mi777K
0
在职申硕(同等学力)英语
相关试题推荐
个体在企业组织中学习的特点是()。
Themediacanimpactcurrentevents.AsagraduatestudentatBerkeleyinthe1960s,Irememberexperiencingtheeventsrelated
Nowadays,wehearalotaboutthegrowingthreatofglobalization,accompaniedbythosewarningsthattherichpatternoflocal
Afterretirementfrommedicalresearch,mywifeandIbuiltourhomeinagatedcommunitysurroundedbyyachtclubsandgolfcou
Facinggrowingcostsandshrinkingtax______,thegovernmentisnowthreateningtocutfundingforenvironmentalprotectionprog
Theybelievethatthemerchantshadconspiredtounderminethenation’seconomicindependence.
A.Xiamenisarapidlygrowingmoderncitywithavigorouseconomy.B.MincuisineisoneoftheeightmostfamouscuisinesofC
A.XiamenisarapidlygrowingmoderncitywithavigorouseconomyB.MincuisineisoneoftheeightmostfamouscuisinesofChin
A.XiamenisarapidlygrowingmoderncitywithavigorouseconomyB.MincuisineisoneoftheeightmostfamouscuisinesofChin
随机试题
Manypartsofthecountryalsohaveyouthhostelswhereyoungpeoplecanstayforonlyafewdollarsanight.
Photoshop中模糊工具的作用是_________。
小脑的功能不包括
关于浆细胞白血病的骨髓象,下列说法正确的是
以横坐标表示时间,纵坐标表示累计完成任务量,对实际进度与计划进度进行比较的方法是()。
为维护银行业的稳健运行,人民银行对商业银行向关系人发放贷款作出了明确的限制,下列论述中错误的是()。
注册会计师拟运用统计抽样进行控制测试。在确定样本规模时,需要考虑的是()。
[A]Americans’abilitytotakethemortgageinterestdeductionranksuptherewiththerighttobeararmsandwatchfootballgame
Thepolicemantriedto______theteenagedrivertoobeythetrafficlawsratherthanfinehimdirectly.
AllthefollowingsentencescontainthetoneofemphasisEXCEPT
最新回复
(
0
)