Some birds like to sit on a sheep because ______. What does the second paragraph mainly discuss?

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问题 Some birds like to sit on a sheep because ______.
What does the second paragraph mainly discuss?

选项 A、Some animals and plants depend on each other for existence.
B、Some animals and plants develop their relationship easily.
C、Some plants depend on each other for food.
D、Some animals live better together.

答案A

解析从文章最后两句In their skin．．．needs to breathe．If the plants are killed．．．the corals will die．说明了动物和植物之间相互依存的关系。

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公共英语二级笔试

公共英语（PETS）

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Some birds like to sit on a sheep because ______. What does the second paragraph mainly discuss?

公共英语二级笔试

公共英语（PETS）

Mostyoungpeopleenjoyphysicalactivities,walking,cycling,football,ormountaineering.Thesewhohaveapassion【C1】_____

AstudyintheUnitedStatesfindsthatgirlsandyoungwomenusetobacco,drugsandalcoholfordifferentreasonsthanhoys.It

AmotherJustthinkyouareinthepositionofaparent.Wouldyouallowyourchildrentoreadanybooktheywantedtowitho

SupposeRobertSmith,aclassmateofyours,isgoingtovisityouduringtheweek-longholiday．Writealettertohimandtellhi

EducationalprogramsforadultsweregrowingfastintheUSduringthe1970sand1980s.In1985,part-timestudentsaccountedfo

Whataretheytalkingabout?

Frenchfries,washeddownwithapintofsoda,areafavoritepartoffastfoodlunchesanddinnersformillionsofAmericanyou

AnnCurrysafamousnewspresenteroftheNBCNews"Today"show.Whenshewas15shehappenedtowalkintoabookstorenherh

Wecanlearnfromthetextthatmanymarriedpeople______.WhenthewritersaysthatJimhasafull-timejobathome,hemeans

Susanisnearlythirty-five.Herparentsthinkit’stimeshe________married.

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患者，女，45岁。间歇性发作咽下困难3个月，可因情绪波动诱发。食管造影未见异常，诊断首先考虑

A．奶及奶制品B．猕猴桃C．动物肝脏D．粮谷类E．马铃薯富含维生素A的食物是

认知心理学观点认为()。

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