When trees are cut down, there is nothing to hold the soil on the hillside.

A.
take place
B.
out of place
C.
in place
D.
in place of

单词拼写(共10小题；每小题1分，满分10分)

根据下列句子及所给单词的首字母，在答题纸上按题号写出各单词正确的完全形式(每空限写一词)。

66.People with a poor memory often f things.

67.Spring is a s when trees turn green and flowers open.

68.Don’t always d on others.You should learn to rely on yourself.

69.George was born on June 1,so Children’s Day is also his b .

70.With no adults around,it’s d for children to swim in the river.

71.He caught a high f .His body temperature was as high as 40℃.

72.There are only five minutes left.We’ll have to walk q to get there on time.

73.He is always happy and never w about anything.

74.They offered me a ticket for the concert,and I a it with delight.

75.The photos will r me of the days when we were together.

When trees are cut down, there is nothing to hold the soil on the hillside.

A. take place B. out of place C. in place D. in place of

If you want your land to keep fertile, you must try to stop soil from being carried away by water or wind. When soil is taken away by flowing water or blowing winds we call it soil erosion. Ways have been found to stop soil erosion, and this is known as soil conservation. One way of stopping soil erosion is to grow small plants such as grass. These plants are referred to a cover crops, whose roots hold the soil tightly together. The rain water can not wash away the soil. When trees and tall bushes are planted at the edges of an open field, soil erosion by strong winds can not take place. The trees and bushes, which act as a very big and firm wall, protect the open land from the winds. The way to stoop soil erosion on slopes is to build terraces on the slope of hillside and mountainside. When the slope of a hillside is cut into “step”, water carrying soil can not run straight down the terraces, which are used to slow down the speed of the flowing water containing much soil in it. In this way most of the soil in the water is left behind on the terraces, much soil in it.
【小题1】What takes place in soil erosion?