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 persons 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.
答案与题解:
1.B本题项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第三段最后两句说道,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从而提高药物疗效。
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