课标通用2018版高考英语大一轮复习Unit4Wildlifeprotection课时作业新人教版必修2.docVIP

下载本文档

1
0
约8.16千字
约 6页
2018-04-12 发布于河北
举报
版权申诉

课标通用2018版高考英语大一轮复习Unit4Wildlifeprotection课时作业新人教版必修2.doc

1、本文档共6页，可阅读全部内容。
2、有哪些信誉好的足球投注网站（book118）网站文档一经付费（服务费），不意味着购买了该文档的版权，仅供个人/单位学习、研究之用，不得用于商业用途，未经授权，严禁复制、发行、汇编、翻译或者网络传播等，侵权必究。
3、本站所有内容均由合作方或网友上传，本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺！文档内容仅供研究参考，付费前请自行鉴别。如您付费，意味着您自己接受本站规则且自行承担风险，本站不退款、不进行额外附加服务；查看《如何避免下载的几个坑》。如果您已付费下载过本站文档，您可以点击这里二次下载。
4、如文档侵犯商业秘密、侵犯著作权、侵犯人身权等，请点击“版权申诉”（推荐），也可以打举报电话：400-050-0827(电话支持时间：9:00-18:30)。
5、该文档为VIP文档，如果想要下载，成为VIP会员后，下载免费。
6、成为VIP后，下载本文档将扣除1次下载权益。下载后，不支持退款、换文档。如有疑问请联系我们。
7、成为VIP后，您将拥有八大权益，权益包括：VIP文档下载权益、阅读免打扰、文档格式转换、高级专利检索、专属身份标志、高级客服、多端互通、版权登记。
8、VIP文档为合作方或网友上传，每下载1次，网站将根据用户上传文档的质量评分、类型等，对文档贡献者给予高额补贴、流量扶持。如果你也想贡献VIP文档。上传文档

课标通用2018版高考英语大一轮复习Unit4Wildlifeprotection课时作业新人教版必修2

Unit 4 Wildlife protection Ⅰ.阅读理解 [2017·湖北八校联考] Researchers found that women who had given birth might have a reduced risk of death from several common conditions than those who had not，according to a study released Friday by the Imperial College London (ICL)． The study，led by ICL researchers，was published in the journal BMC Medicine.It investigates the association between the so-called reproductive factors—such as having children and breastfeeding—and a womans risk of death. Researchers analyzed data from 322,972 women across 10 countries，including the UK，France，Germany and Sweden，with an average age of 50. Each woman was followed for an average of 12.9 years.During this period，there were 14,383 deaths overall，which included 5,938 deaths from cancer and 2,404 deaths from circulatory system diseases，according to the study. The team compared reproductive factors with the risk of death from several common conditions，such as breast cancer，strokes and heart diseases. The researchers found that women who had given birth had a 20 percent reduced risk of death than those who had not.It was also found that there was a reduced risk of death (8 percent) in women who had breastfed compared to those who had not. The risk of death from cancer was lower in those who had given birth compared to those who had not.Within this group，the risk was reduced even further in women that gave birth to two or three children in comparison to those who had only one child. “Hormonal mechanisms may explain the lower risk of death that we observed with breastfeeding，and having given birth，as these factors are associated with changes in hormone levels，” said Dr Melissa Merritt from ICL，who led the study. 1．According to the passage，the risk of death from cancer is lower in women who________. A．have given birth to no child B．have given birth to one child C．have given birth to more than one child D．have breastfed 2．According to the research，if a woman has given birth and breastfed，her risk of death