【答案解析】Make Our City Greener
In recent years
our cities have become much greener. A lot of trees, grasses and flowers were planted in vacant lots and on both sides of the streets. The area of urban afforestation per person has been greatly increased.
There are a lot of advantages for
urban afforestation.
First
, trees, grasses and flowers can make the city more beautiful, for natural plants are well matched with artificial buildings.
Secondly
, plants can purify air in the city because they not only absorb carbon dioxide and the flying dust but also release oxygen.
Thirdly
, plants can muffle noise produced by vehicles and machines. Finally, trees can make the climate better in that they can alleviate intense heat in summer and severe cold in winter.
Therefore, special care must be taken to
make our city greener.
From my point of view, first we should make people aware of
the importance of making cities greener.
Besides, great effort should be made to
plant more trees, grasses and flowers.
Meanwhile, we should carefully look after
the planted trees, grasses and flowers and no one is allowed to destroy these plants.
So long as we do so, we can certainly
make our cities greener.