分析 本文是一篇科教類閱讀,文章主要介紹了鐵和維生素D可能會使孩子更聰明、更健康.鐵對一個嬰兒的大腦和中樞神經(jīng)系統(tǒng)發(fā)育很重要;而維生素D有助于強健骨骼,增強人體、抵御疾病.
解答 BCDAC
71.B主旨大意題.根據(jù)第一段Iron is important to the development of a baby's brain and central nervous system.可知鐵對一個嬰兒的大腦和中樞神經(jīng)系統(tǒng)發(fā)育很重要;根據(jù)倒數(shù)第二段Vitamin D helps build strong bones and strengthens the body's defenses against disease.可知維生素D有助于強健骨骼,增強人體、抵御疾;再根據(jù)全文內(nèi)容可知,本文想要告訴我們:鐵和維生素D可能會使孩子更聰明、更健康.故選B.
72.C細節(jié)推理題.根據(jù)第五段During pregnancy some of the women received supplements containing iron and another micronutrient,folic acid.可知婦女在懷孕期間收到的一些補充劑含有鐵和其他微量營養(yǎng)素:葉酸.由此推知,當一個女人懷孕了,不一定會收到一些額外的維生素D.故選C.
73.D細節(jié)理解題.根據(jù)倒數(shù)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.可知含維生素最低的新生兒患呼吸道感染的幾率是那些維生素D水平正常的兩倍.由此可知,缺少維生素D的嬰兒更有可能患呼吸系統(tǒng)感染.故選D.
74.A詞義辨析題.根據(jù)第五段During pregnancy some of the women received supplements containing iron and another micronutrient,folic acid.可知婦女在懷孕期間收到的一些補充劑含有鐵和其他微量營養(yǎng)素:葉酸.由此可知,folic acid是一種微量營養(yǎng)素.故選A.
75.C推理判斷題.根據(jù)最后幾段的內(nèi)容可知,主要介紹了研究人員在做關(guān)于嬰兒體內(nèi)維生素D水平和其他微量元素的研究.由此推知,接下來將介紹研究人員的發(fā)現(xiàn).故選C.
點評 本文考察學生的理解推斷能力以及細心程度,只要抓住文章的關(guān)鍵詞,采用尋讀的方法查找細節(jié),就能找到正確答案.
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