How can quantum dots be used to confirm diseases?
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1 .What is true of microwaves?
A Their wavelengths are shorter than those of visible light. B Their wavelengths are longer than those of visible light. C They are different from visible light as they are a kind of radiant energy. D They are visible to the human eye.
2 .What is NOT true of the invisibility device?
A It is made of a special material with unusual ability. B Microwaves bounce off it when they strike it. C Microwaves pass through it when they strike it. D It bends the microwaves all the way around until they reach the opposite side.
3 .What does the word “coaster” mean in the passage?
A A disk or plate placed under a drinking glass to protect a table top. B A vessel engaged in coastal trade. C A roller coaster. D A resident of a coastal area.
4 .Harry Potter’s invisibility cloak doesn’t have any real competition yet, because_____.
A scientists have not found out how his cloak works B the cloaking device is a total failure C the cloaking device works only for microwaves D the cloaking device works only for visible light
5 .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.
7 .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.
8 .The following developing countries are doing very well scientific research on nanotechnology EXCEPT______.
A China B Brazil C Iran D India
9 .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.
10 .What a new tendency in lung cancer is concluded by the researchers?
A Men are more likely to develop lung cancer than women. B Women are more likely to develop lung cancer than men. C Patients with lung cancer become older, especially males. D Patients with lung cancer become younger, especially females.
