Advertisements, c of two main types, are all around us. A(n) (商业的）advertisement is one people have paid for to advertise a product or a service while a public service advertisement is made for free to teach us and help us lead better lives, which is b to the public.

    The type of language used in advertisements is very (独特的）.For example,most adjectives in advertisements have positive meanings so that they can help the (观众）remember the products the advertisements p.

    Advertising dates back to the Christian Era（公元）.One of the first known methods of advertising was outdoor signs,which would be painted on the wall of a building and were usually (引人注目的）.Archaeologists(考古学家）have found signs in the ruins of ancient Rome and Pompeii,a city which was completely d by the volcano (爆发）near the city in AD79.

    Nowadays, advertisements appear in many types of media(媒体）,making it more c for people to get information.But some false and irrelevant(不相关的）advertisements appear in our lives.So we should rationally(理性）deal with advertisements.