题目内容：

    Jack's love for birds started when he made his first birdfeeder about six years ago. He filled the feeder with seeds (种子), put it in his backyard and then _____ started coming. He got really _____ in birds as more came. Then he joined a local society. As he realized that more and more birds were dying very _____, he wanted to try his best to help them.

Besides what he has done, he has his own group called Protecting Our Birds. He does _____ about birds, run a website to teach people about birds and how to help them, and _____ boxes for birds. Not long ago, he found that the bluebirds were nesting(做窝)in the dead trees which were often cut down, _____ he began to make bluebird boxes for the birds in order to save them. Now he wants to use these boxes to _____ the dead trees. He hangs these boxes up in trees and takes _____ down every week to see if the birds are nesting in them. He also writes articles, hoping that more people will _____ protecting natural ecosystems(生态系统). “Researching birds is ______ to protecting birds,” Jack says. “In order to protect birds, we have to learn and really know about the birds.”

1.A.bees B.birds C.people D.scientists

2.A.nervous B.weak C.bored D.interested

3.A.peacefully B.safely C.quickly D.sadly

4.A.practice B.business C.instruction D.research

5.A.builds B.breaks C.lifts D.pushes

6.A.so B.but C.though D.because

7.A.take good care of B.take the place of C.catch up with D.come up with

8.A.it B.this C.these D.them

9.A.wait for B.send for C.join in D.hand in

10.A.simple B.crazy C.important D.fresh