Listen again and fill in the gaps in this summary of the text about nanotechnology
Nanotechnology has the potential to change the world in many (1) _____ ways. It will improve many of the products that we use every day and make many new products possible.
Nanotechnology is the science of very small things, usually smaller than a hundred nanometers. A hundred nanometers is equivalent to about (2) _____ across or less. At this scale things that we (3) _____ can behave in very different ways.
One of the (4) _____ of nanotechnology can be seen in batteries. By making the granules inside the battery on a nanometer scale it’s possible to recharge the battery (5) _____, and the battery’ll (6) _____ longer.
Some of the more exotic ideas in nanotechnology involve new assembly methods. Scientists are experimenting with new nanomaterials that can grow or (7) _____ themselves. (8) _____ are already able to do this. The goal is to find ways for human beings to this as well.
7.12 Think of everyday products such as cars, computers, clothes. How can nanotechnology change them? Discuss your ideas with a partner.
Complete these predictions about nanotechnology. Use each verb in the list once.
Take send clean up perform stop
CARS Manufacturers will be able to construct cars from lightweight materials that are 50 times stronger than steel. Today's two-tonne Cadillac could weigh only 50 kg in the future. The materials used to build cars will be able to (1) _____ scratches, dents, and rust.
COMPUTERS We’ll be able to (2) _____ trillions of bytes of information in a structure the size of a sugar cube.
MEDICINE Doctors will be able to (3) _____ broken human bones with artificial bones made with nanotechnology. Nanorobots will be able to (4) ______ surgery. We'll be able to (5) ______ pills containing nanorobots.
THE ENVIRONMENT We'll be able to (6) _____ nanorobots up into space to rebuild the ozone layer. Other nanorobots will be able to (7) _____ pollutants from water and (8) _____ oil spills.
CLOTHES Everyone will be able to (9) _____ computers and colour screens because they will be built into their clothes. We'll be able to (10) _____ our clothes from getting dirty by making them with stain repellent fabrics.
7.14 What might be the impact of nanotechnology? Think of the benefits and threats it can bring to people. Discuss your ideas with a partner.
The Complex Object
7.15 Fill in the blanks with the particle ‘to’ where necessary.
1. Using this electronic microscope we can see carbon atoms _____ roll into nanotubes.
2. The researchers wanted the nanomaterial _____ assemble itself but they couldn’t make it _____ do that.
3. Engineers found nanogranules _____ be extremely efficient in batteries.
4. The students asked the lecturer _____ explain the mechanisms of using nanotechnology for drug delivery.
5. Visit http://www.news.cornell.edu/releases/Nov03/NEMSguitar.ws.html, and you’ll hear a nanoguitar _____ sound.