B.they have difficulty changing their diet

C.butterfish are too large for young puffins

D.butterfish are not as delicious as herring

提示:推理判断题。根据第三段的内容可知,Steve Kress说,butterfish也许体型太大太圆,幼小的海鹦很难吞咽下去。故选C项。

答案:C

4.What is the text mainly about?

A.How to protect animals.

B.Some sea animals in Maine.

C.The negative effects of climate changes.

D.A seabird that is in danger of extinction.

提示:主旨大意题。本文介绍了一种生活在美国缅因州和缅因海湾的濒危的海鸟puffins(海鹦),介绍了它的生活习性和面临的挑战。故选D项。

答案:D

Ⅵ.七选五

　　Heart disease is the most common cause of death in the United States.Over a million people each year will have a heart attack and 25% will die before they get to the hospital or in the Emergency Department.　1　 Prevention(预防) is the best way,so it does not damage your heart and limit your ability to enjoy life.Simple ways might help reduce your risk.

　　Don't smoke

　　This means that you should stop smoking as soon as possible if you already smoke,and if you live with a smoker,you should put limits on the smoker.　2　

　　Get moving

　　　3　 Find a form of exercise you enjoy enough to want to do it regularly and stick to (坚持) it.If you have health issues that limit exercise,see your doctor for advice and make sure you begin with a program that will not be too challenging for you to keep with it.

　　　4　

　　Make sure you follow a heart prevention diet,even if you don't have any symptoms(症状) of heart disease.　5　 You should eat a high-fiber,low-fat diet rich in fruits,vegetables and whole grains.Meats should be lean (瘦的),and fats should be limited to heart healthy fats such as olive oil.Sugars and processed foods should be limited,and fruits and vegetables should make up a large part of your daily meals.

A.Eat healthy foods.

B.Manage your weight.

C.A heart attack is a very frightening event.

D.The key is to prevent the disease before it starts.

E.It's best if you can get in 30 minutes a day of exercise.

F.If you feel any of these heart attack symptoms,do not ignore.

G.If you haven't started smoking,be sure never to start this habit.

答案:1~5 CGEAD