Earth is mentioned by the author as a necessity for hydroponics. The passage mainly discusses how to control plant growth.

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问题 Earth is mentioned by the author as a necessity for hydroponics.
The passage mainly discusses how to control plant growth.

选项 A、Right
B、Wrong
C、Not mentioned

答案B

解析本题说的是文章的主题，作为主题应有概括性，how to control plant growth的内容文中提及，但非主题，主题就是“soiless gardening”。

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本试题收录于：职称英语理工类A级题库职称英语分类

职称英语理工类A级

职称英语

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Earth is mentioned by the author as a necessity for hydroponics. The passage mainly discusses how to control plant growth.

职称英语理工类A级

职称英语

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NaturalMedicinesSinceearliestdays,humanshaveusedsomekindsofmedicines.Weknowthisbecausehumanshavesurvived.

ProlongingHumanLife1Prolonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldhave

Inthesituationcomedy,atraditionalformatfortelevisionshows,thesamecharactersappearrepeatedlyinhumorousepisodes.

CanAddedCalciumHelpOlderBones?NewZealandresearcherssayguidelinesadvisingseniorstoconsumeatleast1,000to1,2

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