CONTROLLED PRACTICE. I. Choose the correct option and answer the questions using the text of the article.

I. Choose the correct option and answer the questions using the text of the article.

1. Find the synonym to the word “untethered”

A harmless

B wasteless

C limitless

2. What does invasive medicine mean?

A medicine using a lot of drugs

B medicine involving cutting into the body

C medicine involving painful methods

3. Find the synonym to the word “degrade” (according to the context of the article)

A worsen

B dissolve

C distribute

D delegate

4. What substance is often used as a gelable polymer for delivery of drugs and cells?

A glycogen

B dextrin

C alginate

D inulin

5. List the two ways thermo-responsive hydrogel microstructures can change their configuration from closed to open.

II. Decide whether the following statements are true or false and prove your answer by citing the article.

1. Magnetic fields have been the most widely used method of the wireless actuation of microrobots.

2. The new design of medical microrobots was developed by the researchers from Germany and America.

3. Stimuli-responsive hydrogels are often used for biomedical purposes because they can reversibly change their volume in response to temperature, pH, and other stimuli.

4. The automated locomotion of the microrobots is performed mostly by magnetic manipulation.

5. The article describes a brand new technology of using self-folding soft polymeric structures as wirelessly controllable microcarriers.

III. Make up a summary of the article using special expressions from appendix on p. 47.

IV. Work in pairs. Discuss the following issue: Would you rather choose medical microrobots or traditional methods of treatment? Why?

Lesson X

WORD-STUDY

Exercise 1. Check the transcription in a dictionary, read and translate the words listed below.

Nouns

Squid, cephalopod, wavelength, reflectance

Verbs

Unravel, trigger, shift, spread

Adjectives

Tunable, reconfigurable, biomimetic, appropriate

Exercise 2. Match Russian and English equivalents.