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
74
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.
【M5】
选项
答案
tactic改成tactics。
解析
tactic是可数名词,且结合上文,此处应用复数。
转载请注明原文地址:https://kaotiyun.com/show/aBlO777K
0
专业英语八级
相关试题推荐
Themomentumisbuildingaheadofnextmonth’sG8summitinScotlandwheretheleadersoftheworld’srichestnationswilldebat
Radio’sgotaproblem.Althoughsome200millionpeopletuneineachweektoheartheirfavoriteovercaffeinatedDJorcatchtho
ThisiswhatAfricahasinabundance,space,almost12millionsquaremilesofdesert,savanna,coastline,andpeople,700milli
SincetheendofWorldWarII,abroadconsensusinsupportofglobaleconomicintegrationasaforceforpeaceandprosperityh
A、US,UK,Australia,Germany,France,Canada.B、US,UK,Canada,Australia,France,Germany.C、US,UK,Germany,Canada,France,A
AtthebeginningtheauthorseemstoindicatethatHarlemHarlemwascalledthecapitalofBlackAmericainthe1920sand’30s
"unyoked"inthefirstparagraphisclosestinmeaningto______.Whatisthethemeofthestory?
ThecapitalofScotlandis______.
Thebranchoflinguisticsthatstudieshowcontextinfluencesthewayspeakersinterpretsentencesiscalled______.
Who’stoblamefortheapproximately$2agallonmostAmericanspaidforgasolineontheirThanksgivingDaytravels?Toquote
随机试题
()热采井机械采油的后期阶段,油层的供液能力差,原油流动性差,油层温度及粘度变化不大。
茵陈蒿汤中佐以大黄的主要用意是
奥美拉唑治疗消化性溃疡的机理是
正常人血浆中(2M的半寿期是
A、补脾益气,和胃化湿B、补脾益肾,益气和营C、补养气血,健运脾胃D、益气养阴,健脾和胃E、补中益气,升清降浊时时眩晕,面白少神,便溏下坠,脉细无力。宜选
下列属于水利水电工程初步设计阶段施工组织设计文件的内容的是()。
市场细分中的集中策略适用于()。
有一个游戏共有5个项目,完成第1、2、3、4、5个项目的分别占参加游戏人数的84%、88%、72%、80%、56%。如果完成3个或3个以上项目即可得到奖励,那么这个游戏的得奖率至少是多少?()
经济基础是指由社会一定发展阶段的生产力所决定的生产关系的总和。其实质是()
Thechangesinlanguagewillcontinueforever,butnooneknowssure【M1】______whodoesthechanging.Onepossibilityis
最新回复
(
0
)