单选题
单选题 What is the most appropriate title for the passage?
  • a. Prevalent Diseases in the World
  • b. Disease Control and Prevention
  • c. Malaria -- A Fatal Disease
  • d. Sub-Saharan African Children
【正确答案】 C
【答案解析】[解析] 21-25 Malaria is one of the three most prevalent serious diseases in the world. The others are tuberculosis and AIDS. Nearly 500 million people are infected worldwide each year. More than one million die. According to UNICEF, the UN's children's organization, more than 90 percent of all malaria cases are in sub-Saharan Africa. Two thousand African children die daily from the disease. Dr. Patrick Kaucher is with the Centers for Disease Control and Prevention. "In rural Africa, one out of every five children born doesn't survive until his fifth birthday." Malaria is transmitted from person to person via mosquitoes that carry the parasite. Malaria rapidly destroys red blood cells, which deliver oxygen and nutrients to the rest of the body. The disease is preventable and treatable, but most of Africa does not have adequate resources to do either. [难点] 本题主要考查考生是否能从宏观上把握全文主旨，从而选出文章的最佳标题。a项的范围显然大于本文所谈的范围，本文主要指“malaria”(疟疾)这一致命性疾病，所以不符合。b项只是在文中提到关于疟疾是可预防和治愈的，但非洲还没足够的资源，还是突出疟疾这一疾病的致命性特点，所以该项不符。d项说亚撒哈拉非洲地区的儿童，而本文主要谈疟疾疾病问题，非洲地区举例主要是说明该疾病的严重性，显然该项不符合。所以c项是选择项，本文主要谈论疟疾这一致命性疾病，通过举例等说明其危害。
单选题 Which of the following statements is true of African children?
  • a. Nearly 500 million people are infected worldwide each year.
  • b. 90 percent of children died from malaria each year.
  • c. 1/5 children in rural areas died before their fifth birthday.
  • d. Children are infected with Aids and tuberculosis.
【正确答案】 C
【答案解析】[解析] 该题主要考查学生对数字以及文章细节的获取能力，有一定难度。首先要弄清题意。a项虽然在文中出现过，但是并不是指非洲儿童，有迷惑性。b项是联合国儿童基金会所得出的调查结论，指亚撒哈拉地区的儿童，而且文中说是90%多，所以不符合题意。c项正确。d项是文章开头提出和疟疾对比的疾病，不符合题意。
单选题 Why are the red blood cells very important to people?
  • a. They deliver oxygen and nutrients to the rest of the body.
  • b. They kill the mosquitoes.
  • c. They are resistant to malaria.
  • d. They are nutrients.
【正确答案】 A
【答案解析】[解析] 为什么红细胞对人们很重要?通过后文可以听出，疟疾之所以高致病主要是摧毁了人体中的红细胞。“Malaria rapidly destroys red blood cells, which deliver oxygen and nutrients to the rest of the body”，此句还交代了红细胞的作用在于向人类传送氧气和营养物质，所以a项符合题意。
单选题 Why could malaria be transmitted from person to person?
  • a. Mosquitoes breed very quickly.
  • b. Mosquitoes carry parasites.
  • c. It destroys red blood cells.
  • d. It is an epidemic.
【正确答案】 B
【答案解析】[解析] 为什么疟疾会传染?“Malaria is transmitted from person to person via mosquitoes that carry the parasite”，这句话交代了原因。之所以传染是通过蚊子传播寄生虫而导致的。b项正确。a项只是说蚊子繁殖速度快，没说明其携带寄生虫，有一定迷惑性。c、d两项很容易辨别，都不符合题意。
单选题 Which of the following statements best summarizes the main idea of the passage?
  • a. There are three most prevalent diseases in the world.
  • b. Malaria is treatable and preventable.
  • c. African children die from malaria every day.
  • d. Malaria is a prevalent disease.
【正确答案】 D
【答案解析】[解析] 该题考查考生对文章大意的概括能力。a项说世界上有三种流行疾病，不符合本文中心思想。b项说疟疾可以治愈，虽然文中提到了，但是目前还没实现。c项说每天非洲都有儿童死于疟疾，显然不是文章主旨。因此，d项为选择项。