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
About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists
About fifty years ago, plant physiologists set out to grow roots by themselves in solutions in laboratory flasks. The scientists
admin
2015-04-18
41
问题
About fifty years ago, plant physiologists set out to grow roots by
themselves
in solutions in laboratory flasks. The scientists found that the nutrition of isolated roots was quite simple. They required sugar and the usual minerals and vitamins. However, they did not require organic nitrogen compounds. These roots got along free on mineral inorganic nitrogen. Roots are capable of making their own proteins and other organic compounds. These activities by roots require energy, of course. The process of respiration uses sugar to make the high energy compound ATP, which drives the biochemical reactions. Respiration also requires oxygen. Highly active roots require a good deal of oxygen.
The study of isolated roots has provided an understanding of the relationship between shoots and roots in
intact
plants. The leaves of the shoots provide the roots with sugar and vitamins, and the roots provide the shoots with water and minerals. In addition, roots can provide the shoots with organic nitrogen compounds. This
comes in handy
for the growth of buds in the early spring when leaves are not yet functioning. Once leaves begin photosynthesizing, they produce protein, but only mature leaves can "export" protein to the rest of the plant in the form of amino acids.
Where is this passage likely to be found?
选项
A、A newsletter.
B、A magazine.
C、A storybook.
D、A novel.
答案
B
解析
本题考查推理判断。根据本篇文章的结构和文体可知,该文不可能是一篇时事通讯,(因为该文发生在大约50年前),文章也不会是一篇故事或小说。文章是对实验结果的解释,可能是发表在一份杂志上。所以,答案是B。
转载请注明原文地址:https://kaotiyun.com/show/lmwO777K
本试题收录于:
CATTI三级笔译综合能力题库翻译专业资格(CATTI)分类
0
CATTI三级笔译综合能力
翻译专业资格(CATTI)
相关试题推荐
"SymbioticRelationships"Symbiosisisaclose,long-lastingphysicalrelationshipbetweentwodifferentspecies.Inotherw
InthispartoftheReadingsection,youwillread2passages.Youwillhave40minutestoreadthepassagesandanswertheques
NarratorListentoaconversationbetweentwostudents.Nowgetreadytoanswerthequestions.Youmayuseyournotesto
Howistheinformationinthediscussionorganized?
HowMEMORYWORKS1Memoryisthebrain’sabilitytostoreandretrieveinformationrelatedtopreviousexperiences.Memoryoccu
Whatdoesthepassagemainlydiscuss?Whichofthefollowingstatementsabouttheterm"folksong"issupportedbythepassage
NarratorListentopartofalectureinabusinessclass.Nowgetreadytoanswerthequestions.Youmayuseyournotes
PlantPathologySocietyisorganizinganinternationalconferenceandwantsvolunteerstoassistwiththework.Readtheposter
Theheartisastriatedmuscle______contractasquicklyastheskeletalmuscles.
Theglobalizationoftheworld’scapitalmarketsthathasoccurredinthepast10yearswillbereplicatedrightacrosstheecon
随机试题
在教学目标制定时要强调用精确、具体、可操作的形式来表达教学目标,以及反映教学活动实施的预期结果和学生身心方面的行为变化。这属于()
冷热流体在换热时,并流时的传热温度差要比逆流时的传热温度差大。 ()
根据下列案情材料,按照《法律文书写作》教材I中的要求,拟写第一审刑事判决书。2001年×月×日,××市中级人民法院由审判长李×生、审判员刘×文、张×江依法组成合议庭,由孙×河担任书记员,公开开庭审理了王×东杀人一案。×市人民检察院检察员洪×仁出庭
LD同工酶结果在急性心肌梗死时最典型的改变是
运用比较法估价,选择可比实例应符合的基本要求包括()等。
( )比较适用于工作范围很难确定、专业施工技术要求高且急于开工的工程。
固定资产贷款的借款申请人须提交的材料文件包括()。
资料同上。下列有关乙公司非货币性资产交换的会计处理,不正确的是()。
右图反映单位体积空气所能容纳的最大水汽量与气温的关系。完成下列问题。通过上述实验可以推知,相对湿度的变化主要取决于气温,其一般规律是()。①气温高,相对湿度小②气温低,相对湿度小③清晨相对湿度最大④午后相对湿度最大
(2007下监理)在面向对象方法中,对象可看成是属性(数据)以及这些属性上的专用操作的封装体。封装是一种_____(1)技术,封装的目的是使对象的_____(2)分离。(2)
最新回复
(
0
)