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
Mycorrhizal fungi infect more plants than do any other fungi and are necessary for many plants to thrive, but they have escaped
Mycorrhizal fungi infect more plants than do any other fungi and are necessary for many plants to thrive, but they have escaped
admin
2011-01-26
44
问题
Mycorrhizal fungi infect more plants than do any other fungi and are necessary for many plants to thrive, but they have escaped widespread investigation until recently for two reasons. First, the symbiotic association is so well-balanced that the roots of host plants show no damage even when densely infected. Second, the fungi cannot as yet be cultivated in the absence of a living root. De spite these difficulties, there has been important new work that suggests that this symbiotic association can be harnessed to achieve more economical use of costly super phosphate fertilizer and to permit better exploitation of cheaper, less soluble rock phosphate, Mycorrhizal benefits are not limited to improved phosphate uptake in host plants. In legumes, mycorrhzal inoculation has increased nitrogen fixation beyond levels achieved by adding phosphate fertilizer alone. Certain symbiotic associations also increase the host plant’ s resistance to harmful root fungi. Whether this resistance results from exclusion of harmful fungi through competition for sites, from metabolic change involving antibiotic production, or from increased vigor is undetermined.
The level of information in the passage above is suited to the needs of all of the following people except ______.
选项
A、an official of a research foundation who identifies research projects for potential funding
B、a state official whose position requires her to alert farmers about possible innovations in farming
C、a researcher whose job is to identify potentially profitable areas for research and product development
D、a botanist Conducting experiments to determine the relationship between degree of mycorrhizal infection and expected uptake of phosphate
答案
B
解析
本题问的是这篇文章的信息水平不是用来满足哪类人的需要的。本文写的很专业化,用了很多生物学术语,学术水平较高,所以它应是写给那些本领域的专业人士的。答案B说的是写给需要督促农民就耕作方面的革新警惕的官员,官员并不需要具备如此深的专业知识去指导农民,所以B是正确答案。
转载请注明原文地址:https://kaotiyun.com/show/l9BO777K
0
考博英语
相关试题推荐
Lookatthenotesbelow.Someinformationismissing.Youwillhearawomanphoningthroughanordertoheadoffice.
Lookatthenotesbelow.Someinformationismissing.Youwillhearawomanphoningthroughanordertoheadoffice.
Youwillhearaconversationthroughaphone.Foreachquestion(23-30),markoneletter(A,BorC)forthecorrectanswer.After
Lookattheformbelow.Someinformationismissing.Youwillhearawomanbookingexhibitionspaceonthephone.Foreachquest
•YouaregoingtoattendanengineeringexhibitioninFrankfurtsoon.•Writeamemotoyourassistant:explainingwhyyou
•Readthearticlebelowaboutworkingindifferentsizedcompanies.•Aresentences16-22ontheoppositepage’Right’or’Wrong’
TipsforRunning/AttendingBusinessConferenceABringnecessarymaterialssuchasanotepadandapenBC
Ahundredyearsagoitwasassumedandscientifically"proved"byeconomiststhatthelawsofsocietymakeitnecessarytohave
Ahundredyearsagoitwasassumedandscientifically"proved"byeconomiststhatthelawsofsocietymakeitnecessarytohave
随机试题
牵连犯具有哪些特征
无形资产
Thesocialinteractionskillsthereweresodifferentthathewas______(sure)ofthecuesandthecommunicationstyles.
下图中9所指的是
CDFI、PW技术可用于检测()。
下列关于建设工程质量特性的表述中,正确的是()。
我国地大物博,许多风景名胜和古迹分布在名山大川之中。下列关于我国风景名胜的叙述中,错误的是()。
外勤警察是一个单独的警种。()
阅读以下叙述,回答问题【说明】小方是某集团信息处工作人员,承担集团主网站、分公司及下属机构子网站具体建设的管理工作。小方根据在学校学习的项目管理知识,制定并发布了项目章程。因工期紧,小方仅确定了项目负责人、组织结构、概要的里程碑计划和大致
以下关于图片框控件的说法中,错误的是
最新回复
(
0
)