Стр.88-89 ГДЗ Starlight Баранова 9 класс

Vocabulary & Reading

1. These words/phrases below appear in the text. What could the text be about? Listen, read and check.

   Microscopic robot; molecules of DNA; molecular biology; nanotechnology; medical applications; perform operations; miniature robot surgeons; spider-bots; allow treatments.

2. Read the paragraphs and match each paragraph (A–G) with its heading (1–8). You can use each heading once. There is one extra heading.

   1. What it is made of
   2. Restrictions on development
   3. A big-bucks industry
   4. A terrible mistake
   5. What it could be doing soon
   6. What it can do
   7. Many institutes working together
   8. Better and better

3. Read the text again and for questions 1–6 choose the correct answer 1, 2, 3 or 4. Give reasons for your answers.

   1. In the first paragraph, the writer says that the nano-spider…

      1. is much thicker than a human hair.
      2. cannot be seen under a microscope.
      3. was invented by an individual scientist.
      4. is an extremely small machine.

   2. Why does the writer suggest nano-spiders can be classified as robots?

      1. because they have the features of a robot
      2. because they can walk
      3. because they are built with computer chips
      4. because they are microscopic devices

   3. What does “this” refer to in line 30?

      1. the number of steps DNA walkers can manage
      2. the walking distance a DNA walker can do
      3. the length of the DNA walkers
      4. the time each step takes for a DNA walker

   4. What do we learn about nano-spiders in the fifth paragraph?

      1. They could protect our bodies from disease in future.
      2. They are already being used to fight cancer.
      3. They have been used for various medical purposes in the past.
      4. They have not actually been invented yet.

   5. What does the writer say about arguments against the use of nanotechnology?

      1. People are concerned that it is used to build computer parts.
      2. People are concerned that nano-products are not tested before they are sold.
      3. There are concerns about whether the industry has strict rules for safety.
      4. There are no concerns about nanotechnology in clothing and medicine.

   6. All in all, the writer presents nanobots as devices which…

      1. we should be afraid of.
      2. have already been in use for many years.
      3. may be very useful in the future.
      4. are mainly useful in industry.

4. Complete with: developed, device, chips, environment, commands, applications.

Grammar: Reported speech

5. Change the following from direct into reported speech.

   1. ‘We are creating an artificial brain,’ he told the audience.
   2. ‘I’ve just found a job working in a science lab,’ Josie told me.
   3. ‘We will soon have enough money to buy a more powerful computer,’ he said.
   4. ‘I’m going to watch Frankenstein on DVD tonight,’ Tom told me.
   5. ‘Philip is very interested in science,’ she said.
   6. ‘Sally works for a company that designs robots,’ Tony said.
   7. ‘I read an article about artificial intelligence yesterday,’ she told me.

Speaking & Writing

6. Find the main idea in each paragraph. Use them to write a short summary of the text in your notebook. Tell the class.