The world outdoors is full of secrets.They are so attractive that quite a lot of people are busy 1 them.All 2 us are birds，animals，trees and flowers.The facts about how they live 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 businessman who lives 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 with me and I will help you find some of 4 secrets。 Let‘s go quickly 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 air to let the other bees know where they can find food.I will show you many other 8 things.But the best thing that I can teach you is to keep your eyes 9 when you go out。 Nature（自然）tells her secrets only to people who look and listen 10 。
（ ）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。 eat
（ ）4 。 A。 flower‘s B。 animal’s C。 bird‘s D。 nature’s
（ ）5。 A。 through B。 over C。 into D。 in
（ ）6。 A。 says B。 tells C。 asks D。 speaks
（ ）7。 A。 rest B。 trip C。 holiday D。 sleep
（ ）8。 A。 surprising B。 interesting C。 excited D。 beautiful
（ ）9。 A。 open B。 closed C。 listening D。 big
（ ）10。 A。 happily B。 clearly C。 quickly D。 carefully
参考答案：1-5 CBCBA 6-10 BDAAD
