[填空题]Mirages (海市蜃楼) are produced by refraction (折射) of light within a layer of air. This layer of air resists (1) up, even in a fairly strong wind.
Probably the most popular mirage picture is one of a lake in a (2) desert. There may even be the appearance of (3) breaking on the shore. The easiest form of mirage to study, however, is one that has been seen by millions of people-those seeming strips of water on asphalt-surfaced (柏油路面的) roads that disappear suddenly when one (4) them.
The scientist considers the long distance mirage as the most (5) of mirage forms, since it is against a basic law of physics. The law states that the apparent size of an (6) seems smaller as we move away from it; however, this kind of mirage will carry a (7) of a ship, a town, or an island a thousand miles and set it up in the sky as big as life.
Mirages may have had an (8) on hi