听力原文： There are many products and services on the market / which are similar in conten

t / though produced by different Companies. It is vital, therefore, for a company to distinguish itself from its competitors / by having a strong company image / which is immediately recognizable.

Logos are part of this image. They are symbols which often include a name or initials / to identify a company. The logo establishes a visual identity for the company, just as different groups of young people express their identity / through hairstyles and clothes.

Logos are used on letterheads, packaging and brochures / as well as on the product itself. They may also appear in newspapers or on television / as part of an advertising campaign.

The logos of large international companies / are instantly recognizable throughout the world. Many companies have, over the years, renewed their logos to fit in with contemporary design / and to present more power ful images.

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