Flying squirrels are a family of 44 species of squirrels．The term "flying" is somewhat of an incorrect name．

     Flying squirrels are not capable of powered flight like birds or bats; instead, they glide （=move smoothly and quietly） between trees．They are capable of obtaining lift within the course of these flights, with flights recorded to 90 meters （295 ft）．The direction and speed of the animal in midair is varied by changing the positions of its two arms and legs, largely controlled by small soft wrist bones． This changes the tightness of the paganism（翼膜）,a very thin furry parachute-like skin that stretches from wrist to ankle．It has a hairy tail that keeps its flight steady and unchanging．The tail acts as an assistant airfoil （螺旋桨），working as an air brake before landing on a tree trunk．

     Flying squirrels, are gliding mammals （哺乳动物）. A few mammals can glide through the trees, but they do not actually fly （like birds and bats）．They have a very soft and thin skin on either side of

their body．

     The Siberian Flying Squirrel ranges from the Baltic Sea in the west to the Pacific Ocean in the east．Before the 21st century, the evolutionary （进化） history of the flying squirrel was frequently argued about．This debate became clearer and clearer as a result of two recent scientific studies．These studies found support that flying squirrels originated 18-20 million years ago have a twin relationship with tree squirrels．

69．How does the flying squirrel control its flying speed?

       A．By moving its tail．                          

       B．By changing the positions of its arms and legs．

       C．By blowing the air．                        

       D．By moving its soft thin skin on either side of the body．

70．_______ can help the flying squirrel stop gliding and land．

       A．A tree trunk                                           B．Its bones in the body                      

       C．Its tail                                              D．Its wrists

71．According to this article, all the following statements are true except that _______．

       A．flying squirrels and birds are of a kind because both of them can fly

       B．millions of years ago, flying squirrels were sisters and brothers of tree squirrels

       C．flying squirrels can glide instead of flying

       D．flying squirrels give birth to babies rather than lay eggs

72．Which category does the text most probably belong to?

       A．Agriculture and Food．                        B．Health and Medicine．

       C．Plants and Animals．                          D．Science and Technology．

单词拼写（共10题，每题1分，满分10分）

1.Tom told us that when he was young, all of his family would watch______(动画片)after supper.

2.Suddenly Alice ______(猛冲)into the room, grabbed her bag and ran out again.

3.______(好奇地) enough, he seems to have known what we well do next.

4.Peter has a sense of ______(幽默) and is able to make people laugh at any time.

5.Please clean up the house, which is in a ______(凌乱) after the party was over.

6.She is old enough to have the ______(自由) to do as she likes.

7.A collection of rare insects will show us some of his latest ______(发现).

8.I ______(尊重)his view, although I do not agree with them.

9.On summer evenings, his parents sit in the______(阴凉处) of the tree drinking tea and chatting.

10.Disney is a ______(主题) park.

Not long ago the movie 2012 came into screen. The people were threatened by those scenes of destroying flood, severe earthquake, terrifying hurricane and constructions representing human civilization being destroyed and even swallowed by disaster.  Luckily, they are just the director' s imagination, but the present situation is not heading a positive direction, either.

Take my own experience in Alaska as an example. Once I took a trip to the glacier. Along the way there stood signposts marking the snow lines of different years.  They started from the foot of the mountain, but it was at the top when I finally saw melting glaciers(融化的冰川). My heart ached seeing the beautiful blue ice melting at every second.

Sad but true, they are the effects of global warming and the result of our human impact. Furthermore, each year the rising sea level will kill 56 million people, and that’s about the population of the entire Italy. According to studies, if the temperature keeps on rising like this, by the year 2050, some islands and coastal cities including New York, Shanghai, Tokyo and Sydney will be drowned in water.

Our fortune is in our own hands. It depends on us to shape our future, to reduce future human impact and find ways to form a peaceful relationship with our environment. Therefore, it's time for actions to be taken right now. Contribute a little to energy saving by using more efficient light bulbs and less hot water. Let recycle become our habit by thinking twice before throwing something away. Let us take public transportation as our first choice when going to a certain place. It might cost more time for now, but it' s to the benefit of a permanent future. Take care of every tree and grass around us by watering them or simply just avoid destroying them.

In a word, small drops of water make a big ocean. The earth does not belong to us. On the contrary, we belong to the earth. Please bear in mind that the earth is our home. It is our responsibility to build a brighter and better future of our planet and prevent what happened in the movie 2012 from becoming reality.

1. Why does the author talk about the movie 2012 in the passage ?

2.How did the author feel when he took a trip to the glacier?

3.It can be inferred from the third paragraph that________  .

4.According to the passage, you are advised to ________.

5. What does the author mean by saying "small drops of water make a big ocean"?

There once was a King who offered a prize to the artist who would paint the best picture of peace. Many artists _____1_____. The King looked at all the pictures, but there were only two he ____2_____

liked and he had to choose between them.

One picture was of a ___3___ lake. The lake was a perfect mirror for peaceful towering ___4____ were all around it. Overhead was a blue sky with fluffy white clouds. All who saw this picture thought that it was a _____5_____ picture of peace.

The other picture had mountains too. But there were rugged and ____6____. Above was an ____7____ sky from which rain fell, in which lightening ____8____. Down the side of the mountain tumbled a foaming waterfall. This did not look ____9____at all.

But when the King looked, he saw behind the waterfall a tiny ____10____growing in a crack in the rock. In the bush a mother bird had built her ____11____. There, in the midst of the rush of angry water, ____12____ the mother bird on her nest…perfect peace.

Which picture do you think won the prize?

The King ____13____ the second picture.

Do you know why?

“Because,” explained the king, “peace does not mean to be in a place where there is no noise, ___14___, or hard work. Peace means to be in the midst of all those things and still be calm in your ____15___. That is the real meaning of peace.”