分析 本文是一篇科教类阅读,文章主要介绍了铁和维生素D可能会使孩子更聪明、更健康.铁对一个婴儿的大脑和中枢神经系统发育很重要;而维生素D有助于强健骨骼,增强人体、抵御疾病.
解答 BCDAC
71.B主旨大意题.根据第一段Iron is important to the development of a baby's brain and central nervous system.可知铁对一个婴儿的大脑和中枢神经系统发育很重要;根据倒数第二段Vitamin D helps build strong bones and strengthens the body's defenses against disease.可知维生素D有助于强健骨骼,增强人体、抵御疾病;再根据全文内容可知,本文想要告诉我们:铁和维生素D可能会使孩子更聪明、更健康.故选B.
72.C细节推理题.根据第五段During pregnancy some of the women received supplements containing iron and another micronutrient,folic acid.可知妇女在怀孕期间收到的一些补充剂含有铁和其他微量营养素:叶酸.由此推知,当一个女人怀孕了,不一定会收到一些额外的维生素D.故选C.
73.D细节理解题.根据倒数第三段It says newborns with the lowest levels were twice as likely to develop respiratory infections(呼吸道感染) as those with normal levels of vitamin D.可知含维生素最低的新生儿患呼吸道感染的几率是那些维生素D水平正常的两倍.由此可知,缺少维生素D的婴儿更有可能患呼吸系统感染.故选D.
74.A词义辨析题.根据第五段During pregnancy some of the women received supplements containing iron and another micronutrient,folic acid.可知妇女在怀孕期间收到的一些补充剂含有铁和其他微量营养素:叶酸.由此可知,folic acid是一种微量营养素.故选A.
75.C推理判断题.根据最后几段的内容可知,主要介绍了研究人员在做关于婴儿体内维生素D水平和其他微量元素的研究.由此推知,接下来将介绍研究人员的发现.故选C.
点评 本文考察学生的理解推断能力以及细心程度,只要抓住文章的关键词,采用寻读的方法查找细节,就能找到正确答案.
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