宁阳二中高三英语模拟试卷

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　　A

　　Nanotechnology is a fashionable word these days. The name “nano”(纳米) comes from the size of molecules, which are measured in nanometers—or one billionth of a meter. Through operating the atoms and molecules, scientists can change the nature of common materials and even create new materials that have new properties.

　　But scientists are concerned about its possible risks to our daily lives.

　　Clothing merchants claim their nano-cloth keeps our bodies warmer in winter, saving us from needing thick coats. Vitamin companies boast their nano-pills are easier to absorb. Home decoration companies suggest you use their nano-paint, which has no smell, is waterproof, and free from poisonous substances.

　　Nanomaterials are making our lives better, its creators say. The US National Science Foundation predicts nanotechnology research will grow into a US $-trillion industry over the next 10 years.

　　Science Foundation predicts nanotechnology research will grow into a US $-trillion industry over the next 10 years. But relatively little is known about the potential health and environmental effects of the tiny particles. Just atoms wide, they are small enough to penetrate cells easily in lungs, brains and other organs. US best­seller “Prey”，written by Michael Crichton, paints a doomsday in which a group of tiny nanomachines escapes the lab and threatens to take control of humanity.

　　Science Foundation predicts nanotechnology research will grow into a US $-trillion industry over the next 10 years. But relatively little is known about the potential health and environmental effects of the tiny particles. Just atoms wide, they are small enough to penetrate cells easily in lungs, brains and other organs. US best­seller “Prey”，written by Michael Crichton, paints a doomsday in which a group of tiny nanomachines escapes the lab and threatens to take control of humanity. Studies have shown that some nanoparticles can be poisonous to animal cells. There are fears that exposure can cause breathing problems, since nanoparticles could be taken in through the nose, causing unknown problems to brain cells. Scientists also fear that nanoparticles placed on the skin could damage DNA. “No one knows, and that’s the problem，”said Pat Mooney, director of the ETC Group. “People are rubbing them on the skin as sunscreens and as cosmetics.”

　　Mooney’s group is calling for products such as sunscreen, that are directly absorbed into the body to be_taken_off_the_shelf until they’re proved safe.

　　36.What do you think is nanotechnology is?

　　A. It is a fashionable technology that operates the atoms and molecules.

　　B. It is a fashionable technology that can be used to create DNA.

　　C. It is a fashionable technology that is created by a scientist named Nano.

　　D. It is a fashionable technology that combines chemistry with physics.

　　37.What benefits can nanotechnology bring to us except________.

　　A. It can allow us to be free from thick coats by wearing clothes made of nano-cloth.

　　B. It can allow us to create more new materials to meet the need of our modern society.

　　C. It can help us to take control of the doomsday.

　　D. It can help us to decorate our homes more environmentally friendly.

　　38.Studies have made it clear that________.

　　A. exposure to nanoparticles can damage DNA

　　B. rubbing nano cosmetics on the skin can help control skin diseases

　　C. all nanoparticles can’t be poisonous to animal cells

　　D. the nanoparticles have bad effects on health and environment

　　39.What the underlined part “be taken off the shelf” in the last paragraph mean?

　　A. Mooney’s group recommends that consumers to buy nano products such as sunscreen on the shelf.

　　B. Mooney’s group suggests that nano products such as sunscreen win a great success on the shelf.

　　C. Mooney’s group suggests nano products such as sunscreen be sold on shelf instead of on the street.

　　D. Mooney’s group suggests nano products such as sunscreen be proved safe before they are sold.