注釋：
1. World Health Organization (WHO)：世界衛(wèi)生組織
2. along with：與…一起
3. New England Journal of Medicine：新英格蘭醫(yī)藥雜志。New England 是美國(guó)東北六州( Maine, Vermont, New Hampshire, Massachusetts, Rhode Island 和 Connecticut )的總稱。
4. Harvard University School of Public Health：哈佛大學(xué)公共衛(wèi)生學(xué)院
5. HIV ( human immunodeficiency virus )：人免疫缺陷病毒
6. AIDS ( acquired immunodeficiency syndrome )：獲得性免疫缺陷綜合征，艾滋病
7. (be) infected with：感染上…
練習(xí)：
1. How many babies are born with low birth weight in the developed countries every year according to WHO?
A) 20,000,000.
B) 18,000,000.
C) 2,000,000.
D) 38,000,000.
2. A pill of multivitamins may contain all of the following substances EXCEPT _________.
A) all vitamins in the B group
B) vitamins C and E
C) much iron and folate
D) antiviral substances
3. Which of the following is NOT one of the effects of multivitamins mentioned in the passage?
A) To reduce the rate of babies born too early.
B) To reduce the risk of low birth weight.
C) To reduce fetal deaths in pregnant women infected with HIV.
D) To increase the number of lymphocytes in mothers’ blood.
4. What a role do lymphocytes play in the human body?
A) To reduce the rate of dying while still a fetus.
B) To raise the body’s immunity against infection.
C) To help prevent the development of heart disease.
D) To help prevent the development of diabetes.
5. How many percent of babies were born with low birth weight to women who were not infected with the AIDS virus and took the multivitamins according to a new study?
A) Less than 8%.
B) About 9.5%.
C) 1.5%.
D) 17.5%.
答案與題解：
1. C 第一段最后兩句說到，WHO估計(jì)每年有2000萬出生嬰兒體重過低，其中十個(gè)中有九個(gè)生于發(fā)展中國(guó)家，可見發(fā)達(dá)國(guó)家只占十分之一，故應(yīng)是200萬。
2. D 文章第二段第二句已經(jīng)說明，選項(xiàng)A、B、C均是多種維生素片所含的物質(zhì)，只有D項(xiàng)沒有提及，而且也不可能。
3. A 關(guān)于多種維生素制劑的作用，B項(xiàng)在第四段第二句提到，C項(xiàng)在第三段倒數(shù)第三句提到，D項(xiàng)在第三段最后兩句提到，只有 A項(xiàng)在第四段倒數(shù)第二句中提到它時(shí)卻說維生素對(duì)它不起什么作用。
4. B 第三段最后一句是文章中一句說明淋巴細(xì)胞在身體中的作用的句子，故是正確答案，其它A、C、D三項(xiàng)都與淋巴細(xì)胞無關(guān)。
5. A 第四段第一句和第二句已經(jīng)將本題答案說得很清楚，其中的just under eight percent（只不足8 %）正是A 項(xiàng)的less than 8%。
1. World Health Organization (WHO)：世界衛(wèi)生組織
2. along with：與…一起
3. New England Journal of Medicine：新英格蘭醫(yī)藥雜志。New England 是美國(guó)東北六州( Maine, Vermont, New Hampshire, Massachusetts, Rhode Island 和 Connecticut )的總稱。
4. Harvard University School of Public Health：哈佛大學(xué)公共衛(wèi)生學(xué)院
5. HIV ( human immunodeficiency virus )：人免疫缺陷病毒
6. AIDS ( acquired immunodeficiency syndrome )：獲得性免疫缺陷綜合征，艾滋病
7. (be) infected with：感染上…
練習(xí)：
1. How many babies are born with low birth weight in the developed countries every year according to WHO?
A) 20,000,000.
B) 18,000,000.
C) 2,000,000.
D) 38,000,000.
2. A pill of multivitamins may contain all of the following substances EXCEPT _________.
A) all vitamins in the B group
B) vitamins C and E
C) much iron and folate
D) antiviral substances
3. Which of the following is NOT one of the effects of multivitamins mentioned in the passage?
A) To reduce the rate of babies born too early.
B) To reduce the risk of low birth weight.
C) To reduce fetal deaths in pregnant women infected with HIV.
D) To increase the number of lymphocytes in mothers’ blood.
4. What a role do lymphocytes play in the human body?
A) To reduce the rate of dying while still a fetus.
B) To raise the body’s immunity against infection.
C) To help prevent the development of heart disease.
D) To help prevent the development of diabetes.
5. How many percent of babies were born with low birth weight to women who were not infected with the AIDS virus and took the multivitamins according to a new study?
A) Less than 8%.
B) About 9.5%.
C) 1.5%.
D) 17.5%.
答案與題解：
1. C 第一段最后兩句說到，WHO估計(jì)每年有2000萬出生嬰兒體重過低，其中十個(gè)中有九個(gè)生于發(fā)展中國(guó)家，可見發(fā)達(dá)國(guó)家只占十分之一，故應(yīng)是200萬。
2. D 文章第二段第二句已經(jīng)說明，選項(xiàng)A、B、C均是多種維生素片所含的物質(zhì)，只有D項(xiàng)沒有提及，而且也不可能。
3. A 關(guān)于多種維生素制劑的作用，B項(xiàng)在第四段第二句提到，C項(xiàng)在第三段倒數(shù)第三句提到，D項(xiàng)在第三段最后兩句提到，只有 A項(xiàng)在第四段倒數(shù)第二句中提到它時(shí)卻說維生素對(duì)它不起什么作用。
4. B 第三段最后一句是文章中一句說明淋巴細(xì)胞在身體中的作用的句子，故是正確答案，其它A、C、D三項(xiàng)都與淋巴細(xì)胞無關(guān)。
5. A 第四段第一句和第二句已經(jīng)將本題答案說得很清楚，其中的just under eight percent（只不足8 %）正是A 項(xiàng)的less than 8%。