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
It’s often said that plants hidden in the tangle of the Amazonian rain forest may harbor an undiscovered cancer cure. John Richa
It’s often said that plants hidden in the tangle of the Amazonian rain forest may harbor an undiscovered cancer cure. John Richa
admin
2013-06-02
26
问题
It’s often said that plants hidden in the tangle of the Amazonian rain forest may harbor an undiscovered cancer cure. John Richard Stepp thinks the same can be said for the world’s weeds.
In a study published last year, Stepp, a professor at the University of Florida in Gainesville, looked at the ingredients of common drugs sold at local pharmacies. Of the 101 primarily plant-based health remedies he examined, Stepp estimated that the main ingredient in about a third of the drags was a weed.
"Those are Fairly conservative numbers too," he added. "It is actually more than a third. We cut quite a few off the list, because they weren’t quite weedy enough, in my view."
To be "weedy enough" to meet Stepp’s criteria, plants had to be fast-growing and soft-tissued—unlike trees, for example, which are slow-growing and have woody tissues. Stepp also limited his definition of weeds to plants that thrive in disturbed areas, like farms or clearings, without being deliberately planted.
Stepp said his tally of common weed-based drags was ten times higher than expected. There are about 8,000 weeds known to science. That figure comprises only about 3 percent of the world’s 250,000 described plants.
Phyllis Coley is a biologist at the University of Utah who conducts drug-discovery research in the Panamanian tropical rain forests. She said Stepp’s finding is "provocative."
Coley noted that weedy plants have long been a source of traditional medicines. A key question, she said, is, Why?
"Perhaps this is because weeds were shown to work better," she said. "But I would also suggest that weedy plants would be much more readily available, as they grow in association with human disturbance and are therefore more likely to be experimented with and developed into medicines."
Meanwhile Stepp said his 2004 study results suggest that, in addition to exploring the rain forest for medicinal plants, it makes sense to look at the 8,000 or so weeds that grow closer to home.
The anthropologist doesn’t think drag companies share that view. "The difference between wanting to find new medicines and wanting to find new medicines to make a profit is a very wide gulf," he said.
Regardless of whether new drugs are developed from weeds, Stepp said weed research could lead governments to respect and promote traditional medicinal practices, especially in parts of the world with limited access to modem health care facilities.
What is the significance of weed research according to Stepp?
选项
A、It would help to maintain the diversity of plants.
B、It would contribute to the growth of cultivated plants.
C、It would promote traditional medicines.
D、It will result in more modem health care facilities.
答案
C
解析
见文章倒数第1段,杂草的研究会促进政府尊重并发展传统医药。
转载请注明原文地址:https://kaotiyun.com/show/rr67777K
0
大学英语六级
相关试题推荐
Thecompanywouldnotgobankrupt,______(如果她想出了增加销售的新点子).
Bringingupchildrenisahardwork,andyouareoftentoblameforanybadbehaviorofyourchildren.Ifso,JudithRichHarris
A、Areport.B、Amagazine.C、Atextbook.D、Asciencebook.BFromwhatisthepassageprobablytaken?
A、Castles’structureandtheeatinghabitinthem.B、Castles’structureandpeoplewholivedinthem.C、Castles’structureandt
A、RadioTimes.B、Alocalpaper.C、SundayTimes.D、TVTimes.B细节辨认题。女士建议男士看看本地报纸找寻房源信息,SundayTimes对此帮助不大。RadioTimes,TVTimes都属
Fromchildhoodtooldage,wealluselanguageasameansofbroadeningourknowledgeofourselvesandtheworldaboutus.When
A、Thewaygovernmentsupportsbusiness.B、Theelectionprocessforrepresentatives.C、Theamountofmoneyusedforcampaigns.D、
Thedictionaryisoftenusedtodeterminethecorrectspellingofwords,ortofindouttheacceptedpronunciation.Butsuch【C1】
A、Inahotel.B、Inastationer.C、Inamarket.D、Inapostoffice.A
A、Itisabreakthroughinthestudyofthenervesystem.B、Itmaystimulatescientiststomakefurtherstudies.C、Itsresulthel
随机试题
设单片机的fosc=6MHz,下面程序是100ms延时的子程序。DELAY:MOVR7,#64HA0:MOVR6,#0FAHDJNZR6,$DJNZR7.DE
尊重病人自主性或决定,在病人坚持己见时,可能要求医生
对大多数慢性病患者,医生帮助患者自助,属于哪种医患关系模式
患者神疲思睡,动则心悸,常自汗出,纳差乏力,面色不华,舌淡,脉沉细无力。其证型是()
直接比较修正一般是采用()的方法,以估价对象的房地产状况为基准,将可比实例的房地产状况与它逐项比较打分。
有两箱数量相同的文件需要整理,小张单独整理好一箱文件要用4.5小时,小钱要用9小时,小周要用3小时。小周和小张一起整理第一箱文件,小钱同时开始整理第二箱文件。一段时间后,小周又转去和小钱一起整理第二箱文件,最后两箱文件同时整理完毕,则小周和小张、小钱一起整
教学过程中学生是学习的主体。()
办案时两个领导向你施加压力,一要求从严,一要求从宽,你怎么办?
某二叉树中度为2的结点有18个,则该二叉树中有【】个叶子结点。
斯蒂芬.霍金出生于1942年1月8日,在圣奥尔本斯长大,是家中4个孩子中的老大。【T1】他的父亲是一位研究生物学家,母亲是一所医学研究院的秘书,因此他对科学感兴趣一点也不令人惊奇。(itwasnotsurprisingthat)学生时期,他就被物
最新回复
(
0
)