What would be the best title for this passage? Why are "blue polyethylene bags" mentioned in paragraph 2?

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问题 What would be the best title for this passage?
Why are "blue polyethylene bags" mentioned in paragraph 2?

选项 A、They are used to prop up bananas.
B、They protect growing bananas and speed ripening.
C、They help increase heat and humidity and so prevent injury.
D、Bunches of bananas are always covered with them.

答案B

解析第二段主要讲述用蓝色聚乙烯袋来保护生长的香蕉，使其加速成熟，故选B。

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本试题收录于：公共英语二级笔试题库公共英语（PETS）分类

公共英语二级笔试

公共英语（PETS）

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What would be the best title for this passage? Why are "blue polyethylene bags" mentioned in paragraph 2?

公共英语二级笔试

公共英语（PETS）

Psychologiststakeoppositeviewsofhowexternalrewards,fromwarmpraisetocoldcash,affectmotivationandcreativity.Beha

Asmywifegreetedmeoneevening,hervoicecamethroughthedoor,"Guesswhat?"Ialwaystakeadeep【C1】______onthisvery

Whatisthemaintopicoftheconversation?

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Georgehadstolensomemoney,butthepolicehadcaughthimandhehadbeenputinprison.Nowhistrialwasabouttobegin,and

Amongstthemostpopularbookswrittentodayarethosewhichareusuallyclassifiedassciencefiction.Hundredsoftitlesare【C

Flyingoveradesertareainanairplane,twoscientistslookeddownwithtrainedeyesattreesandbushes.Afteranhour’sfli

Ourcountryhasbecomeasocietyofemployees.AhundredyearsorsoagoonlyoneoutofeveryfiveAmericansatworkwasemploy

"WearenotabouttoentertheInformationAge,butinsteadareratherwellintoit."Presentpredictionsarethatby1990,abou

Whenshewasawake,shefoundthatshewasstandingon______seemedtobeapieceofstone.

关于供热管网试运行的要求，正确的有()。

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