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
Like all animal species, plant species must spread their offspring to suitable areas where they can grow and pass on their paren
Like all animal species, plant species must spread their offspring to suitable areas where they can grow and pass on their paren
admin
2010-05-14
30
问题
Like all animal species, plant species must spread their offspring to suitable
areas where they can grow and pass on their parent’s genes.
Young animals generally spread by 【M1】______
walking or flying. Because plants don’t have that ability,
they may somehow hitchhike. 【M2】______
Some plant seeds scatter by blowing in the wind or floating on water. Many other plant
species, though, trick an animal into carrying their seeds. How do they do? They enclose
them within a tasty fruit and advertise the fruit’s ripeness by its color or smell. The hungry
animal collects and swallows the fruit, walks or flies off, but later spits out the seeds【M3】______
somewhere far from its parent tree.
Seeds can thereby be carried thousands of miles. It may 【M4】______
surprise you to learn that plant seeds can resist digestion. In fact, some seeds actually
require passage through an animal’s body before they can grow. Wild strawberries offer a
good example of hitchhiking tactic.
When strawberry seeds are still young and not yet 【M5】______
ready to be planted, the surrounding fruit is green,
sour, and hard. When the seeds final 【M6】______
mature, the berries mm red, sweet, and tender. The change in the berries’ color serves as a
signal to birds which then eat the strawberries, fly off, and eventually spit out the seeds.
Naturally, strawberry plants doesn’t set out with
a conscious intent of attracting birds only 【M7】______
when their seeds were ready to be dispersed away.
Nor did birds set out with the intent of 【M8】______
planting strawberries. Rather, strawberry plants evolved through natural selection. The
sweeter and reder the final strawberry,
the more birds spread its ripe seeds; the greener and 【M9】______
more sour the young strawberry,
the birds destroyed the seeds by eating berries before the 【M10】______
seeds were ready.
【M2】
选项
答案
may改成must。
解析
情态动词语气不同,must强调必须,不得不,只能。
转载请注明原文地址:https://jikaoti.com/ti/0X3YFFFM
0
专业英语八级
相关试题推荐
A、Exchangeinformationondates.B、Performcomputations.C、Ameansofcommunication.D、Processdata.A
ImetCameronathishomeinthevillageofNewtonmore,intheScottishHighlands.He’s【C1】______,sowhenwewentoutofhisco
ImetCameronathishomeinthevillageofNewtonmore,intheScottishHighlands.He’s【C1】______,sowhenwewentoutofhisco
Whattodonow?SchoolofficialsaroundthecountryareaskingthatquestionfollowingaSupremeCourtdecisionrejectingracial
A、Annualmembershipforthefuture.B、Yearlymembershipfornow.C、Quartermembershipforthefuture.D、Seasonalmembershipfor
TotheoneBritishcoupleinseventhathasproblemsconceiving,twinssoundlikeadreamcometrue.Sowhenwould-beparentstu
Thecollegeboard’srecentlyannouncedchangestoitsSATcollegeentranceexambringtomindthefamiliarphrasetoolittle,to
A、Solarenergywillreplacefossilfuelsinthenearfuture.B、Moreplantswillusesolarenergytocutgreenhousegases.C、More
Eachnewcropofadolescentsalwaysseemsunfathomabletoitspredecessors.ButwhenjournalistMarieWinnbegantostudytoday’
TheThanksgivingDayison_____.
随机试题
针对土的击实和CBR试验,根据《公路土工试验规程》(JTG3430—2020)回答下列问题。关于土工击实试验曲线的绘制,以下描述正确的有()。
市政公用工程中的柔性管道通常有()。
某些氨基酸不见于新合成的蛋白质一级结构中,是后来修饰的。在坏血病中,作为胶原的哪个氨基酸未被完成
某建设工程项目规模很大,将对国民经济产生较大影响,现在要对该项目进行可行性研究。【2008年真题】根据题意,回答下述问题:依据《中华人民共和国环境影响评价法》,该项目应进行环境影响评价,这是对项目实施后可能造成的环境影响进行()。
下列关于MM资本结构理论的说法正确的有()。
根据法律援助条件规定,下列哪一项目中公民因经济困难没有委托代理人的.可以申请法律援助()
不是每个走上运动场的孩子,将来都会成为李娜、孙杨、林丹,但一个从小接受终身体育理念的孩子,注定会在未来的岁月里因为体育运动受益终身。因为体育运动蕴含着丰富的精神力量——喜怒哀乐、团结协作、激情勇敢、坚持奋进。不管时代怎么变,不管流行是什么,来自于体育的精神
若把英文单词comic的字母拼写顺序写错,则可能出现错误的概率是()。
A、 B、 C、 D、 A
(39)不属于物流的三种表现形式之一。
最新回复
(
0
)