Trees are useful to man in three very important ways. The first important way is that they provide man with food, wood and other products. Trees provide not only man with food, but also many animals with food. Without trees many animals could not live on the earth. It’s not easy for man to live on the earth, either.

The second important way is that trees give us shade. On a hot summer day, people are eager(渴望)to have a rest under the shade of a tree after they have walked a long way. You can imagine how important the shade of a tree is to man and to animals.

The third important way is that trees help to prevent drought and foods. However, in many parts of the world, man has not realized the third important way. He has cut trees down in large numbers. In the end he finds that he has lost the best friends he had.

The giraffe is the tallest modern land animal. It can be over 5. 5 meters tall. Its neck alone may be 1. 9 meters long. Yet the giraffe has only seven bones in its neck, the same number as in the humans’. Even a small bird has many more bones in its neck than a tall giraffe. Each bone in a giraffe’s neck is very long, while the bones in a human’s neck are short. That makes the difference. A female giraffe gives birth to one baby at a time. The baby, called a calf, is about 1. 9 meters tall at birth. By the age of eight it is full-grown. The giraffe eats mostly leaves. Because it has a long neck, it can reach the leaves high up on the trees.

1.In this passage the underlined word “giraffe” means _______.

A．鲸鱼             B．长颈鹿           C．大象             D．河马

2.The bones in a bird’s neck are _______.

A．as big as in a human’s neck               B．as big as in a giraffe’s neck

C．many more than in a human’s neck         D．much smaller in a giraffe’s neck

3.Which of the following is TRUE?

A．A giraffe has only seven bones.

B．The giraffe is the largest animal on the land.

C．It takes eight years for a giraffe to grow up.

D．Most of the leaves on the trees are eaten up by giraffes.

4.When a giraffe is born, it is about _______.

A．5. 5 meters long                        B．5. 5 meters tall

C．1. 9 meters long                        D．1. 9 meters tall

5.We can guess when a giraffe sees a tiger _______.

A．it will run away as fast as possible

B．it will run to eat the tiger

C．it will make the tiger bring it something to eat

D．it will make one of the smallest animals bring the tiger something to eat

　 We know that trees are useful in our everyday life. They   1  us many things, such as wood, oxygen, rubber, medicines and many other things. They can  2  tell us a lot about our climate. The following are the reasons. If you   3  a tree, you can see that it has many rings. Most trees grow one new ring   4  year. Because of the reason, we know   5  a tree is. A tree over a hundred years old means that it has more than a hundred   6 . When the climate is dry or very cold, the trees do not grow very much and their rings are usually   7 . When it is wet and warm, the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the   8  changed suddenly. If we look at the rings on this tree, we can learn about the   9  for a hundred years. We can see  10  our climate is changing today.

     trees are going to be planted around the park near our school.

A．A lot             B．Plenty of          C．Lot of            D．Much