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
Most plants can make their own food from sunlight,【C1】______ some have discovered that stealing is an easier way to live. Thousa
Most plants can make their own food from sunlight,【C1】______ some have discovered that stealing is an easier way to live. Thousa
admin
2010-06-11
60
问题
Most plants can make their own food from sunlight,【C1】______ some have discovered that stealing is an easier way to live. Thousands of plant species get by【C2】______ photosynthesizing (光合作用), and over 4:00 of these species seem to live by pilfering sugars from an underground【C3】______ of fungi(真菌). But【C4】______ in a handful of these plants has this modus operandi been traced to a relatively obscure fungus. To find out how【C5】______ are【C6】 ______ , mycologist Martin Bidartondo of the University of California at Berkeley and his team looked in their roots. What they found were【C7】______ of a common fungus, so【C8】______ that it is found in nearly 70 percent of all plants. The presence of ’this common fungus in these plants not only【C9】______ at how they survive, says Bidartondo, but also suggests that many ordinary plants might prosper from a little looting, too.
Plants have【C10】______ relations to get what they need to survive. Normal【C11】______ plants can make their own carbohydrates through photosynthesis, but they still need minerals. Most plants have【C12】______ a symbiotic relationship with a【C13】______ network of what are called mycorrhizal fungi, which lies beneath the forest【C14】______ . The fungi help green plants absorb minerals through their roots, and【C15】______ , the plants normally【C16】______ the fungi with sugars, or carbon. With a number of plants sharing the same fungal web, it was perhaps【C17】______ that a few cheaters —dubbed epiparasites-- would evolve to beat the system.【C18】______ , these plants reversed the flow of carbons【C19】______ it into their roots from the fungi【C20】______ releasing it as "payment".
【C7】
选项
A、evidences
B、pictures
C、traces
D、hints
答案
C
解析
此句意思是“他们所发现的是一种普通真菌的痕迹”。“evidences”意思是“证据”;“ pictures”意思是“图片;照片”;“hints”意思是“暗示”,而“traces”意思为“痕迹;遗迹;踪迹”,符合题意,所以选C。
转载请注明原文地址:https://kaotiyun.com/show/RtKK777K
0
大学英语六级
相关试题推荐
Peoplebornintheautumnlivelongerthanthoseborninthespring.Andtheyarelesslikelytofall【B1】illwhentheyareolde
EversinceALGoreinventedit,theInternethasbeenaparadiseforthosewithacreativeattitudetofacts.Students,forexam
A、Industry.B、Health.C、Thefutureofourchildren.D、Cleanair.AAccordingtothepassage,whatdoesmanvalueamongthefollow
Todefinesciencewemaysimplycallit______.Whichofthefollowingstatementsdoestheauthorimply?
Todefinesciencewemaysimplycallit______.Theword"hypothese"(Line3,Para.2)means______.
Tworelatedparadoxesalsoemergefromthesamebasicconceptionoftheaestheticexperience.Thefirstwasgivenextendedconsi
Theplaceofthechildinsocietyhasvariedforthousandsofyearsandhasbeeneffectedbydifferentculturesandreligions,
ParadiseLostisMilton’smasterpiece.ItsstoryistakenfromtheBible,about"thefallofman",thatis,howAdamandEveare
A、PresidentWashington.B、PresidentAdams.C、PresidentHamilton.D、PresidentMonroe.B
随机试题
律师阅卷的主要内容有_______、_______、_______、_______、_______、_______。
A.α干扰素B.羟基脲C.美法仑D.白消安为使慢性粒细胞白血病达到细胞遗传学缓解,应首选
下列哪项不是增生型肠结核的临床表现
主动脉瓣关闭不全,出现周围血管征的原因是
在以下选项中,()是用来表示各承重构件的布置、形状、大小、材料、构造及其相互关系的一套建筑图纸,是编制预算和工料分析的依据。
某房地产公司计划在北京开发某住宅项目,采用公开招标的形式,有A、B、C、D、E、F六家施工单位领取了招标文件。本工程招标文件规定:2004年10月20日下午17:30为投标文件接收截止时间。在提交投标文件的同时,需投标单位提供投标保证金20万元。在
采用年数总和法计算年折旧率,已知折旧年限50年,已使用年数8年,年折旧率为()。
研究项目的融资方案,首先要研究拟定项目的()。
看涨金融期权合约赋予期权买方执行期权与否的选择权,即当期权市场价格低于协定价格时,买方可以选择放弃期权。()
申请设备贷款要求的,但申请有担保流动资金贷款没有要求的条件是()。
最新回复
(
0
)