首页
登录
职称英语
In some places leaves will fall off the trees before they change colors in the a
In some places leaves will fall off the trees before they change colors in the a
游客
2023-09-16
68
管理
问题
In some places leaves will fall off the trees before they change colors in the autumn. [br] The precondition of the appearance of anthocyanins is there is sugar in the leaf cells.
选项
A、Y
B、N
C、NG
答案
C
解析
出题干中的anthocyanins定位到文章第二个小标题下的第3点Anthocyanins,which give color to…;再由题干中的sugar定位到下段末句Most anthocyanins are produced in the autumn…本题涉及花青素出现的先决条件。文中介绍了花青素的作用,并提及由于充足的光照和叶细胞内过多的糖分,多数花青素都生产于秋季。但并未涉及花青素出现的先决条件,因此应判断本题为NG。
转载请注明原文地址:http://tihaiku.com/zcyy/3018148.html
相关试题推荐
Jimtoldmehe(join)______thearmytwoyearsbefore.hadjoined本题考查的是动词的时态。主句的谓语动
Beforetheflighttakesoff,allpassengers(ask)______tofastentheirseatbelt
Thoughhe_____wellpreparedbeforethejobinterview,hefailedtoanswersome
Thegraduateshada(cheer)______farewellpartybeforeleavingthecollege.cheerf
A—StockexchangeK—StocktransferB—BuyingandsellingstockL—StockcompanyC—S
A—StockexchangeK—StocktransferB—BuyingandsellingstockL—StockcompanyC—S
A—StockexchangeK—StocktransferB—BuyingandsellingstockL—StockcompanyC—S
Beforemakingaspeech,weoftenneedtomakebriefspeakingnotes.Youcan
Beforemakingaspeech,weoftenneedtomakebriefspeakingnotes.Youcan
Beforemakingaspeech,weoftenneedtomakebriefspeakingnotes.Youcan
随机试题
MTBAUTOSALES,LTD.OFFICEMEMODearallemployees,Presentationskillsandpub
TheJapanesedesireformarriagehadbeenverystrong.Inthefifth"worldy
[originaltext]M:Youstillhaveonehour,sorelax.W:Relax!HowcanIwhenI’
WhenIdecidedtoquitmyfull.timeemploymentitneveroccurredtomethatI
Iamamotherofthree(ages14,12,3)andhaverecentlycompletedmycolleg
企业生产的产品没有国家、行业标准的,应当制定企业标准,作为组织生产的依据()。
患者,男,75岁。牙痛隐约,时作时止,牙齿浮动。口不臭,脉细。治疗除取主穴外,还
李杰同学喜欢打击乐,一次数学课上忍不住用手指敲打桌子,被老师讽刺挖苦,赶出教室。
以下关于小儿惊厥的叙述错误的是A.由于神经细胞异常放电引起 B.发作时让患儿去
把下列的六个图形分为两类,使每一类图形都有各自的共同特征或规律,分类正确的一项是
最新回复
(
0
)