The colour of gold - Module 9

C1 Advanced · Word Formation · Advanced Expert Student's Resource Book, Pearson Education

For questions 1–8, read the text below. Use the word given in capitals at the end of some of the lines to form a word that fits in the gap in the same line. There is an example at the beginning.

TRADITION

RESEARCH

ALTER

DOUBT

DISTINCT

DESIRE

JEWEL

SIGNIFY

It has long been possible to modify the (0) ___ of precious metals by adding a layer of another material, such as an alloy, to the surface. For example, what is known as 'rose gold' is (1) ___ made by adding copper. Nanotechnology (2) ___ at Southampton University have now discovered how to produce gold and silver in any colour you please, by making microscopic (3) ___ in the surface that affect the way the material reflects light. (4) ___ , much of the allure of a material such as gold lies in its (5) ___ colouring, which has led people to ask what is to be gained by the newly discovered process. However, it seems there are quite a number of possible applications for the technique, where another colour would be (6) ___ . For example, you could add coloured branding to a piece of silver (7) ___ or design a gold watch face on which the hours are denoted in different colours. Another (8) ___ application might be security tagging because the modified surfaces would be extremely hard to forge.

The colour of gold

APPEAR

Available as a free printable PDF worksheet with an optional answer key.

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