Unit 2 English around the world课时作业

Using language

　　I．单句语法填空

　　1．Mr.Smith used to_smoke (smoke) a lot, but he has given it up now.

　　2．If you do so, you can do more work with fewer (few) people.

　　3．You were working too hard.You'd better keep a balance between work and relaxation.

　　4．Either you or I am (be) going to be in charge of this matter.

　　5．It's my turn to_pick (pick) up my daughter from the kindergarten after work.

　　6．We Chinese have good reasons to be proud of our achievements in the past thirty years.

　　7．The closer (close) you stay to nature, the more you will appreciate her beauty.

　　8．You are supposed to_ask (ask) for permission if you want to take photos in the museum.

　　9．There is still room for improvement in the future, especial in the area of security.

　　10．The astonished expression on his face suggested that he knew nothing about the astonishing news.(astonish)

　　III.阅读理解

　　A

　　This is not something new.You're sitting at the dinner table with your dog touching your feet.You know you shouldn't give dogs human food.But when you look down，you find that those lovely puppy eyes are almost impossible to say"no"to.So you give it some food.

What is it about a dog's loving gaze(凝视) that makes is so lovely？A new study by a scientist Miho Nagasawa seems to have found the answer.He found it has to do with something called the cuddle(拥抱) chemical.The cuddle chemical in the blood encourages bonding.Levels of it increase，for example，when a parent hugs a newborn baby.According to Nagasawa's study，levels of the cuddle chemical can also go up when we look deeply into the eyes of a dog.