急The world of out-of-doors is full of secrets.And they are s

急
The world of out-of-doors is full of secrets.And they are so interesting that quite a lot of people are busy studying them.All around us are birds,animals,trees
and flowers.The facts about how they __1__ 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 __2__birds?A businessman who lives near New York city became so__3__ in insects that he began to collect them.He now has more than one thousand different kinds and carefully__4__ in glass boxes.
Come then with me,and I will help you find some of nature’s secrets.Let us go__5__through the woods and fields.Here we shall find now a rabbit tells the other rabbits that there is danger.We shall __6__a mother bear and her young ones as they look for__7__ and get ready for winter sleep.We shall watch bees dancing in the air to let other bees know__8__ they can find food.I will show you many other interesting things,but the thing that I can__9__ you is to keep your eyes and ears __10__ when you go out of doors.Nature tells her secrets only to people who look and listen carefully.
( )1.A.bear B.live C.speak D.fly
( )2.A.studying B.eating C.learning D.finding
( )3.A.friendly B.carefully C.busy D.interested
( )4.A.locked B.kept C.putted D.filled
( )5.A.near B.quickly C.quietly D.politely
( )6.A.hear B.follow C.catch D.help
( )7.A.food B.fruit C.vegetables D.water
( )8.A.how B.why C.where D.when
( )9.A.make B.pass C.give D.teach
( )10.A.closed B.open C.safe D.clean