大学英语六级讲义与笔记:阅读部分(三)_大学英语阅读

大学英语六级讲义与笔记:阅读部分(三)

　　The very best standard of living is nothing if it is not possible to take a pleasant walk in the district, if the children cannot be allowed to play in the streets, because the risks of traffic are too great, if during shopping you can nowhere find a spot for enjoying for a moment the nice weather, in short, if you only feel yourself at home after the street-door of your house is closed after you.

　　23. The passage mainly deals with ______.

　　the life span of the Mojave shrimps

　　the survival of desert shrimps

　　the importance of water to life

　　life in the Mojave Desert

　　注：三段出现shrimp，说明本文主要讲shrimp，排除C和D，A选项life span没出现过。

　　There are desert plants which survive the dry season in the form of inactive seeds. There are also desert insects which survive as inactive larvae . In addition, difficult as it is to believe, there are desert fish which can survive through years of drought in the form of inactive eggs. These are the shrimps that live in the Mojave Desert, an intensely dry region in the south-west of the United States where shade temperatures of over 50C are often recorded.

　　The eggs of the Mojave shrimps are the size and have the appearance of grains of sand. When sufficient spring rain falls to form a lake, once every two to five years, these eggs hatch . Then the water is soon filled with millions of tiny shrimps about a millimetre long which feed on tiny plant and animal organisms which also grow in the temporary desert lake. Within a week, the shrimps grow from their original 1 millimetre to a length of about 1.5 centimetres.