问几个语法问题哈Archaeologists in Ireland believe that a recently di

问几个语法问题哈
Archaeologists in Ireland believe that a recently discovered chalice,which dates from the eighth century,was probably buried to (keep from )being stolen by invaders.括号内的为什么要改成to avoid呢?原句那里哪里不对呢?
Several recent studies suggest that (A child born into a family the members of which have allergies )will probably develop an allergy following the onset of a minor viral infection括号内改成Children born into families whose members have allergies will probably themselves develop allergies.为什么更好呢?其实family后为什么是跟whose呢?
Discrimination in wages (that favors predominantly male occupations over those that are predominantly female has )given rise to substantial differentials between the wages of house painters and secretaries and between the wages of parking-lot attendants and library assistants.括号内为嘛要改成in predominantly male occupations over the predominantly female has呢?这样不是不具有可比性了么?
To help preserve ancient Egyptian monuments threatened by high water tables,a Swedish engineering firm has proposed installing pumps,perhaps solar powered,(to lower the underground water level and to dig trenches )around the bases of the stone walls.括号内为什么要改成To lower the underground water level and digging trenches呢?两句意思有啥不同呢?
Unlike a funded pension system,in which contributions are invested to pay future beneficiaries,(a pay-as-you-go approach is the foundation of Social Security.)
括号中的为什么要改成 Social Security is founded on a pay-as-you-go arpproach呢?那不是变成system跟Social Security比较了么? wzyaisjm 1年前他留下的回答 已收到1个回答

yinan66 网友

该名网友总共回答了18个问题，此问答他的回答如下：采纳率：83.3%

问题补充：第四个是 i like going rowing in summer very much,1.Which team will won this game.问：为什么用won而不用win?答：首先句子的

1年前他留下的回答

10

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