4．When did they find the use of the pigeons?

　　A．In the quiet night. B．In war.

　　C．At home. D．In the cage.

　　5．How do pigeons find their way?

　　A．They appear to have a compass inside them.

　　B．They have good memories.

　　C．They have good sight.

　　D．They are very clever.

　　[答案]　1－5　ADCBA

　　第三步　研读--能力提升　接轨高考

　　根据P18教材课文，在空白处填入1个适当的单词或括号内单词的正确形式

　　There are nearly 400 different types of 1.sharks(shark)，but only about 30 types of sharks are known 2.to have attacked(attack) human beings.Contrary to 3.what many people might assume，evidence shows that sharks seldom attack humans.There are three types of shark attacks.In the main type，the shark attacks you because it mistakes you for a fish，but when it tastes human flesh it decides to give up and 4.swims(swim) away.In the second type，the shark pushes you 5.with its nose to find out if you are fit to be eaten，and then bites you if it thinks you are.In the third type，the shark waits for you to swim by，and then attacks you 6.suddenly(sudden)．The last two of them more often result in the 7.death(die) of humans.However，if you follow the advice，you will be 8.safer(safe)：keep calm; hit the shark on 9.the nose with your fist; stick your finger in the shark's eye.

　　Don't 10.be frightened(frighten) by sharks: you are 30 times more likely to be hit by lightning than be attacked by a shark.