We can learn from the text that The passage is mainly about

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问题 We can learn from the text that
The passage is mainly about

选项 A、the harmful effect of vitamin A.
B、vitamin A and fractures.
C、vitamin A and human health.
D、vitamin A deficiency.

答案B

解析主旨题。纵观全文，文章主要围绕vitamin A和fracture的关系展开论述，这两个词也是在整篇文章中复现率最高的词。由此可知"维生素A和骨折"符合文意。"维生素A的有害作用"过于宽泛；"维生素A和人类健康"更是把主题人为地拔高，涵盖面过大；"维生素A的缺乏"是文中的一个细节，不能作为主旨。

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考研英语一

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We can learn from the text that The passage is mainly about

考研英语一

WhatdoestheexampleoftheEnglishschoolboyinparagraph1indicate?______InParagraph2,severalstudieshaveshownthatt

ThepressintheUnitedStatesisveryimportantbecause,【C1】______thaninanyothercountry,itisrecognizedashavingaresp

Althoughthetotalpercentageofdailysmokersisfallinginmostcountries,anewinternationalstudyshowsthatsixpeopledie

FromthefirstthreeparagraphswecanlearnthatThestructured-inquiryprocesscanbeusefulfor

ThebesttitleforthispassagemaybeItcanbeinferredfromParagraph5thatinJapanskyscrapers

ManyparentswhowelcometheideaofturningofftheTVandspendingmoretimewiththefamilyarestillworriedthatwithoutTV

What’sthepublic’sopinionaboutnuclearindustry?ThemostimportantreasonwilytheBushadministrationsupportmorenewnuc

Incomparisonwithtraditionalhomestheadvantagesofmodemself-sufficienthomesare______.Wecaninferfromthepassagetha

WhichofthefollowingisNOToneoftheadvantagesofmini-computers?WhichofthefollowingstatementsisNOTtrue?

Thereareseveraladvantagesinmakingcomputersassmallasonecan.Sometimesweightisparticularlyimportant.Amodernaircr

A、VAD方案B、DA方案C、CHOP方案D、ABVD方案E、VLDP方案非霍奇金淋巴瘤首选

药物相互作用对药动学的影响A．与多潘立酮配伍B．甲苯磺丁脲配伍氢氯噻嗪C．磺胺类药与青霉素配伍D．与大环内酯类抗生素配伍E．阿司匹林与磺酰脲类降糖药合用影响吸收()。

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下列有关《宪法》的指引作用的表述中，哪些说法是正确的?()

提高问题解决能力的教学措施有哪些?

下列关于人类通讯史的说法，不正确的是()。

下列关于ASCII编码的叙述中，正确的是

DearMrMichaels,AlthoughIhavebeenvery______withtheserviceIhavereceivedfromyourestablishmentinthepast,Imustex