2016英语专四听力dictation模拟练习(21)

2016-04-12 14:51:15来源:网络

2016英语专四听力dictation模拟练习(21)

  2016英语专四改革,听力部分dictation看似简单的从15个句群变成了10个,但是句子长度变长,所以考生们在考前要多练听力同时提高自己的注意力集中时长。

  Soils

  There are many different kinds of soils. Different soils havedifferent types of rock and minerals in them. Some soils havemore water in them than others. Some soils might have moreplant and animal material in them, too.

  Different kinds of soils are found in different parts of the world.There are several kinds of soils found in the United States. Insome areas, the soil has a lot of clay. Other soils are very sandy.Loam is a kind of soil that has a good mixture of clay and sand.

  In some places, soil layers are very thick. Lots of plants grow in places with a thick soil layer. In dryand windy places soil layers are much thinner. Layers of soil on mountains are thin because gravitypulls the soil downhill.

  The type of soil in a particular place affects what kinds of plants can grow there.

  Useful Words:

  1. clay 黏土,泥土

  2. loam 肥土

  3. layer 层

  4. gravity 地心引力,重力

  5. downhill 往下

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