The world of out-of-doors is full of secrets．And they are so interesting that quite a lot of people are busy   1   them．All   2   us are birds, animals, trees and flowers．The facts about how they love and grow are as interesting as anything could be．

Do you know that one of the great presidents of the USA spent hours and hours studying birds? A business man who lived near New York City became so interested in insects that he began to   3   them．He now has over one thousand different kinds of insects carefully kept in glass boxes．

Come then   4   me, and I’ll help you find some of Nature’s secrets．Let’s go quietly   5   the woods and fields．Here we shall find how a rabbit 6   the other rabbits that there is danger．We shall follow a mother bear and her young ones as they search for food and get ready for their long winter   7  ．We shall watch bees dancing in the air to let the other bees know where they can find food．I’ll show you   8   interesting things, but the best thing that I can teach you is to keep your eyes and ears   9   when you go   10   doors．Nature tells her secrets only to people who look and listen carefully．

1．A．looking for                 B．keeping                C．studying               D．learning

2．A．about                        B．around                 C．among                 D．besides

3．A．kill                            B．catch                   C．collect                 D．keep

4．A．along                         B．into                      C．at                        D．with

5．A．through                     B．over                     C．to                        D．on

6．A．says                          B．tells                     C．asks                    D．speaks

7．A．rest                           B．trip                      C．holiday                 D．sleep

8．A．other many                B．many other           C．any other             D．much other

9．A．open                         B．closed                  C．listening               D．big

10．A．into                         B．inside                   C．between               D．out of

From Monday to Friday most people are busy working or studying, but in the evenings and weekends they are free and  31 themselves. Some watch television or go to the cinema, others take part in sports. This is decided by their own   32  .

There are many different ways to spend our free time.

Almost everyone has some kind of   33  : it may be something from collecting stamps to ____34___ model planes. Some hobbies are very   35 , but others don’t cost anything at all. Some collections are worth(值得…的)  36 of money, others are valuable(有价值的) only to their owners.

I know a man who has a coin collection worth several   37  dollars. A short time ago he bought a rare(罕见的)fifty-cent piece which   38  him $250! He was very happy about this collection and thought the price was all right. On the other hand, my youngest brother collects match boxes. He has almost 600 of them, but I wonder(怀疑) if they are worth any money. However,  39  my brother they are quite valuable.

 40  makes him happier than to find a new match box for his collection.

　　I know a man who has a coin collection worth several (9) dollars. A short time ago, he bought a rare（罕见的）fifty-cent piece which (10) him $ 250! He was very happy about this collection and thought the price was all right. On the other hand, my youngest brother collects match boxes. He has almost 600 of them, but I wonder (11) they are worth any money. However, (12) my brother they are quite valuable. (13) makes him happier than to find a new match box for his collection.