听录音：{MP3:/imgcache/attached/media/20140302/20140302163659_4046.mp3}
回答题：
Listen to the following passage．Altogether the passage will be read to you four times．During the first reading, which will be done at normal speed, listen and try to understand the meaning．For the second and third readings, the passage will be read sentence by sentence, or phrase by phrase，with intervals of 15 seconds. The last reading will be done at normal speed again and during this time you should check your work．You will then be given 2 minutes to check through your work once more．
Please write the whole passage on ANSWER SHEET ONE.

        There are many different l6nds of soils．／Different soils have different types of rock and minerals in them．／Some soils have more water in them than others．／Some soils might have more plant and animal material in them．too．
        Different kinds of soils ale found in different parts of the world．／There are several kinds of soils found in the United States．／In some 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 dry and windy places，soil layers are much thinner．／Layers of soil on mountains are thin．／because gravity pulls the soil downhill．／The type of soil in a particular place affects what kinds of plants can grow there．