考试网 >> 外语考试 >> GMAT >> GMAT指导心得 >> GMAT阅读资料第53篇

发布时间：2006-06-23 17:07     点击：

　　(E) An epidemic of paralytic polio among adolescents and adults

　　2. According to the passage, the outbreak of dengue hemorrhagic fever in the 1950's occurred for which of the following reasons?

　　(A) The mosquito Aedes aegypti was newly introduced into Asia.

　　(B) The mosquito Aedes aegypti became more numerous.

　　(C) The mosquito Aedes albopictus became infected with the dengue virus.

　　(D) Individuals who would normally acquire immunity to the dengue virus as infants were not infected until later in life.

　　(E) More people began to visit and inhabit areas in which mosquitos live and breed.

　　3. It can be inferred from the passage that Lyme disease has become prevalent in parts of the United States because of which of the following?

　　(A) The inadvertent introduction of Lyme disease bacteria to the United States

　　(B) The inability of modern sanitation methods to eradicate Lyme disease bacteria

　　(C) A genetic mutation in Lyme disease bacteria that makes them more virulent

　　(D) The spread of Lyme disease bacteria from infected humans to noninfected humans

　　(E) An increase in the number of humans who encounter deer ticks

　　4. Which of the following can most reasonably be concluded about the mosquito Aedes albopictus on the basis of information given in the passage?

　　(A) It is native to the United States.

　　(B) It can proliferate only in Asia.

　　(C) It transmits the dengue virus.

　　(D) It caused an epidemic of dengue hemorrhagic fever in the 1950's.

　　(E) It replaced Aedes aegypti in Asia when ecological changes altered Aedes aegypti's habitat.

　　5. Which of the following best describes the organization of the passage?

发表评论： 匿名发表 用户名: 查看评论

您将承担一切因您的行为、言论而直接或间接导致的民事或刑事法律责任 留言板管理人员有权保留或删除其管辖留言中的任意内容 本站提醒：不要进行人身攻击。谢谢配合。