Read the text again and match the italicized words and word combinations with their meanings.
a) ___________________a task or situation that tests someone's abilities
b) ___________________a cleansing agent, esp. a surface-active chemical such as an alkyl sulphonate, widely used in industry
c) ___________________ to think of a plan or idea and suggest it d)___________________to have gained knowledge and experience of the world
e) ___________________ restore (something damaged, faulty, or worn) to a good condition
f) ___________________ lacking the qualities or features of living beings
g) ___________________ a substance formed from two or more elements chemically united in fixed proportions
h)__________________ to make or become better; improve
Read the text once more carefully and answer the questions.
a) What means of corrosion prevention do you know?
b) What idea lies behind the new technology of protecting metals?
c) Why was it difficult to put the idea into practice?
d) How did researchers manage to overcome the problem?
8. Translate the last paragraph of the article in written form.
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