2014贵州省遵义市高考英语阅读理解系列自练（2）及答案
阅读下列短文，从每题所给的四个选项(A、B、C和D)中，选出最佳选项，并在答题卡上将该项涂黑。
【2014高考英语模拟试题】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 billi onth 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 nanocloth keeps our bodies warmer in winter, saving us from needing thick coats. Vitamin companies boast their nanopills are easier to absorb. Home decoration companies suggest you use their nanopaint, 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.
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
