2012年职称英语卫生类阅读理解原文模拟卷1_第2页

练习：
　　 1. Which of the following uses of nanotechnology is NOT mentioned in the passage?
　　 A To make beauty products and dirt-resistant clothing.
　　 B To produce better and lighter building materials.
　　 C To help more accurately diagnose diseases.
　　 D To help more effectively treat diseases.
　　 2. How can quantum dots be used to confirm diseases?
　　 A By traditionally looking at a person’s blood under a microscope.
　　 B By letting a person take some kind of medicine.
　　 C By lighting up in the presence of a targeted molecule.
　　 D By subjecting a person to an X-ray examination.
　　 3. How can nanotechnology be used to make a drug more effective?
　　 A By making a drug target the focus of a disease.
　　 B By changing the structure of the body cells.
　　 C By lowering the side effects caused by a drug.
　　 D By letting a patient take a dose as large as possible.
　　 4. The following developing countries are doing very well scientific research on nanotechnology EXCEPT______.
　　 A China B Brazil C Iran D India
　　 5. Which of the following is the possible risk in using nano-materials mentioned in the passage?
　　 A They may cause some damage to the body cells.
　　 B They are harmful materials themselves.
　　 C They may store in the body.
　　 D They may behave differently in the body and the environment.
　　答案与题解：
　　 1．B 本题选项A在第一段第三句提到，选项C在第二段倒数第二句和第四段第一句提到，选项D则在第四段第二、三、四句提到，只有选项B全文均未提及。
　　 2．C 第三段最后两句说到，如果存在靶分子的话，量子点就会发光，以此辨认疾病，这正是本题答案。
　　 3．A 第四段全段都在讲纳米技术如何提高药物疗效，而中心就在于纳米技术能使药物对准疾病病灶(文章中实际是举已经研发的治癌药为例)从而提高药物疗效。
　　 4．C 第五段第二句已经说得很清楚，其中并没有Iran。
　　 5．D 第五段第三、四句说到，纳米材料的颗粒在体内和在体外环境中作用可能不太一样，因此可能存在某种危险性。其实言外之意还存在未知数，所以后一句才说需要更多投入以便搞清它们的危险性。
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