Trees are useful in three important{#blank#}1{#/blank#}  .The most important way is that they  provide man with food , wood and other products. Trees provide food not only for man, but also for animals.{#blank#}2{#/blank#}trees, many animals could not live on the earth. It's not {#blank#}3{#/blank#} for man to live on the earth, either.
    The second important way is that trees give us shade(树荫). On a hot summer day, people are eager to have a rest under the shade of a tree after{#blank#}4{#/blank#}a long way. You can imagine how important the shade of a tree is to man and animals.
    The third important way is that trees help to{#blank#}5{#/blank#} droughts and flood. However, in many parts of the world, man hasn't realized it. He has cut trees down in large numbers. In the end, he finds that he has lost the best friends he had.

{#blank#}1{#/blank#} Today I'm not feeling _______.I want to stay at home.
{#blank#}2{#/blank#} It's a sunny day. Why not go and _______the hills with us.
{#blank#}3{#/blank#} The dish _        delicious. Could you tell me how to cook it?
{#blank#}4{#/blank#} _________he was poor, he was happy.
{#blank#}5{#/blank#} Please keep ________in the library.

    The meanings of colors play an important {#blank#}1{#/blank#}in our world. What a color pass to a person of the west, may be very {#blank#}2{#/blank#}to someone in the east. While a bride(新娘) may wear white to her wedding (婚礼) in Europe or America, a bride {#blank#}3{#/blank#}China may choose to wear a traditional red dress.

Here are some {#blank#}4{#/blank#}and what they represent (代表，象征) to various people of the world.

    RED

    In China red is a {#blank#}5{#/blank#}of luck and is used for many celebrations such as wedding and at the beginning of the New Year. In the United States red represents love and is used during Christmas and so on. Red is also represents {#blank#}6{#/blank#}and power in the west.

    BLUE

    People around the world think{#blank#}7{#/blank#}and the sky with the color blue. For this reason, blue is widely {#blank#}8{#/blank#}with peace and calm. But to the Cherokees (切罗基族人), blue meant trouble or failure. In the United States we have come to connect the color blue with sadness.

    GREEN

    In Paris, all garage collectors are clothed in green, drive green trucks and the bins are also green. In many parts of the world,{#blank#}9{#/blank#} has become a symbol of kindness and the earth.

    YELLOW

    Yellow is a color that symbolizes the sun. In the United States, school buses and taxis are often yellow{#blank#}10{#/blank#}they can catch the eyes. But to the Egyptians, yellow was a color of mourning (哀悼).