Butterflies at RiskWhat's causing problems fo...

Butterflies at Risk

What's causing problems for these beautiful insects?

Something is harming the monarchs. One of the largest butterflies in North America, monarchs are famous for their long migrations（迁徙）covering thousands of miles. Yet the number of monarchs is dropping. Bad weather conditions, putting the butterfly population in danger. Some butterfly experts say that the number of monarch butterflies has been cut by 25 percent. In recent years, unusually cold temperatures and rain have caused monarchs to die in large numbers. These conditions have also caused new butterflies not to hatch（孵化）.

Will they return?

Monarchs are very sensitive（敏感的）to change because of the long distances they travel. They cover thousands of miles each year, flying between their winter homes in Mexico or Southern California and their summer homes in the Midwest. Other animals also migrate. And many travel much farther. A bird called the Arctic tern goes round trip between the Arctic and the Antarctic every year. Like the Arctic tern, a type of gray whale has a long migration. It travels 12,400 miles from Baia California in Mexico to waters off Alaska and back. The longest migration ever recorded is by the sooty shearwater. Every year this bird flies 40, 000 miles from New Zealand to the northern part of the Pacific Ocean to find food.

The monarchs don't travel as far as animals like the Arctic tern and the sooty shearwater, but their journey isn't safe. Every year as many as 100 million monarch butterflies leave Mexico for the first leg of the migration. It's hard to imagine that such a large number might be in danger. Yet many scientists tell us that the danger is very real.

In Mexico people are destroying the natural environment. They cut down the trees where millions of monarchs. spend the winter and use chemicals to kill the milkweed, the monarch's favourite food. Monarchs spend the winter in Mexico and California. In both places, development is destroying these winter homes. Unless steps are taken to protect their habitats, the monarchs' migration could become a thing of the past.

"If we lose the whole migration, we lose one of the nation's most magnificent phenomena, " said Chip Taylor, a professor at the University of Kansas. These butterflies are the symbol of richness of biological diversity（生物多样性）.

1.Are monarch butterflies famous for their long migrations?

2.What are putting the butterfly population in danger?

3.Where are monarchs' winter homes?

4.In Paragraph 2, what animal has the longest migration?

5.What can people do to protect monarch butterflies?

八年级英语回答问题简单题查看答案及解析

1.How many problems are there in the survey?

A.Four B.Five C.Six D.Seven

2.What problems does too much homework cause?

A.Get fat. B.Fight with each other.

C.Feel stressed and get short-sighted. D.Don’t like to study.

3.Julia’s grandfather always gives her much pocket money and she likes eating, she seldom goes out to do sports. Maybe she will __________.

A.get short-shorted B.fight with each other

C.keep fit D.get weight

4.If Simon is feeling stressed, he should _________.

A.buy some snacks B.do much more homework

C.make a plan for study and hobbies D.use his pocket money to do something meningful

5.Peter doesn’t like study. Maybe he _________.

A.plays too many computer games B.has no pocket money

C.gets fatter and fatter D.does exercise every day

6._______ is a good way for students to stop fights.

A.Doing less homework B.Learning how to make friends

C.Playing computer games D.Doing homework in a correct way

八年级英语阅读单选简单题查看答案及解析

1. How many main problems are there in the survey?

A. Three.　　 B. Four.　　　 C. Five.　　 D. Six.

2. What may happen when students have too much homework?

A. Getting fat.

B. Fighting with each other.

C. Enjoying studying.

D. Feeling stressed and getting short-sighted.

3. _______________ is a good way for students to stop fights.

A. Doing less homework

B. Learning how to make friends

C. Playing computer games

D. Finding time to relax

八年级英语阅读理解中等难度题查看答案及解析

1.How many main problems are there in the survey?

A.Six B.Five C.Four D.Three

2.What problem(s) is/ are caused by too much homework?

A.Get fat B.Fight with each other

C.Feel stressed and get short-sighted D.Don’t like to study

3.If　 Simon is feeling stressed, he should 　　　　　　　　　 .

A.do much more homework B.make a plan for study and hobbies

C.buy some snacks D.ask for more pocket money

4.Peter doesn’t like study, maybe he 　　　　　　　　　 .

A.plays too many computer games B.has no pocket money

C.gets fatter and fatter D.has lots of pocket money

5.　　　　　　　　　 is a good way for students to stop fights.

A.Doing less homework B.Playing computer games

C.Buying more books D.Learning how to make friends

八年级英语阅读单选中等难度题查看答案及解析

1.For whom is this form above most probably written?

A.Parents. B.Children. C.Teachers. D.Students.

2.According to the information given in the form, why don’t students like to study?

A.Because of too much homework.

B.Because they don’t know how to get on well with classmates.

C.Because of the influence of computer games.

D.Because they don’t like to do exercise.

3._______ will help you avoid becoming short-sighted.

A.Doing eye exercises regularly B.Reading in bed

C.Reading in the sun D.Reading too long

4.If you feel stressed, you should ________.

A.do less homework

B.make plans for your study, hobbies and relaxation

C.fight with others

D.have some snacks

5.Peter is very fat. Maybe he ________.

A.plays computer games too much B.has too many snacks

C.doesn’t like to do exercise D.B＆C

八年级英语阅读单选中等难度题查看答案及解析

Many people have weight(体重) problems. These problems are bad for their health. One of the biggest reasons is that we sit around too much. So, the best way to lose weight is to move your body.

Turn off the TV. It’s the first thing you need to do. Once a week, turn off the TV and play some sports with your family. You can do something more interesting than sitting in front of the TV, such as playing games and taking a walk.

Walk more. Look for small ways to walk more. When you get the mail, take a walk around the house. Take the dog for a walk each day or ride your bike for 10 minutes before getting ready for work.

Do some housework. Watering the flowers, cleaning the windows, washing clothes and so on. These kinds of activities may not be vigorous(有力的) exercise, but they can keep you moving.

1.What is the biggest reason for weight problems according to the passage?

A.The hard work. B.Watching TV for too long.

C.Too much sleep. D.Sitting too much.

2.What is the first thing you should do to lose weight?

A.Turn off the TV. B.Do some housework.

C.Do something you like. D.Take a walk.

3.Which of the following is NOT true according to the passage?

A.The writer talks about three ways to help move our body.

B.Walking a dog is a good way to exercise.

C.Some small ways can also help us walk more.

D.Playing games is the best way to move our body.

4.The underlined word“they”refers to“_______”.

A.small ways B.vigorous activities

C.games D.activities in the house

5.What is the passage mainly about?

A.How to live a healthy life. B.How to do something interesting.

C.How to lose weight. D.How to spend your free time.

八年级英语阅读单选中等难度题查看答案及解析

Running is becoming popular these days. Many of us run for health. Doctors say many health problems come from these bad habits：eating and drinking too much，smoking，and not taking enough exercise. Doctors tell us，“Eat and drink less，don't smoke，and exercise more.”

Running is a good form of exercise because it helps build a strong heart. It also helps most people lose weight. One 68­-year­-old woman runs three times a week. “I love eating” she says. She runs to lose weight.

Running is good for health in other ways，too. Many runners say running keeps colds and other small health problems away. “Running is my doctor，”says one man.

Running can also help people to relax. So today men and women of all ages enjoy running

These days, 　　 1.　　　　 is becoming popular.

八年级英语阅读理解中等难度题查看答案及解析

Mobile phones are becoming __ with the students. They become a problem for middle schools these days.

Many people like SMS(短讯服务) because it’s easy and __. Some parents feel happy ___they can get in touch with their children. But mobile phones can ___students much trouble in their classroom. Sometimes students may use phone messages to cheat（欺骗）___ exams, and sending messages in class may hurt __ fingers.

Many teachers think that students can’t have phones at school, ___if there’s a good reason, they can __ their phones at school office. Many people understand ___parents want their children to have them, but school should let the students __ when they can use their mobile phones.

1.A.popularer B.more and more popular C.more popular and more popular　　　　　　　　　 D.less popular

2.A.quick B.busy C.different D.right

3.A.if B.because C.after D.when

4.A.help B.ask C.get D.give

5.A.as B.between C.around D.during

6.A.their B.them C.his D.they

7.A.and B.but C.so D.or

8.A.bring B.lose C.leave D.take

9.A.where B.why C.how D.when

10.A.to know B.knows C.know D.knowing

八年级英语完型填空中等难度题查看答案及解析

Running is becoming popular these days. Many of us run for health. Doctors say many health problems come from these bad habits: eating and drinking too much, smoking. and not taking enough exercise. Doctors tell us, ."Eat and drink less, don't smoke, and exercise more."

Running is a good form of exercise because it helps build a strong heart. It also helps most people lose weight. One 68-year-old woman runs three times a week." love eating. "she says. She runs to lose weight.

Running is good for health in other ways too. Many runners say running keeps colds and other small health problems away. "Running is my doctor, "says one man.

Running can also help people to relax. So today men and women of all ages enjoy running.

1.Many people enjoy running because they want to ______.

A.eat much B.keep healthy

C.run fast D.kill time

2.Doctors tell us________in the passage.

A.not to smoke B.not to exercise

C.to drink much D.to eat much

3.The underlined word" weight" means, "________" in Chinese?

A.疾病 B.体重

C.速度 D.健康

4.The third paragraph shows________.

A.running helps people to relax B.people who like running have many health problems

C.running helps build a strong heart D.people who like running have fewer health problems

八年级英语阅读单选中等难度题查看答案及解析

Running is becoming popular these days. Many of us run for health. Doctors say many health problems come from these bad habits：eating and drinking too much, smoking and not taking enough exercise. Doctors tell us, “Eat and drink less, don’t smoke, and exercise more.”

Running is a good form of exercise because it helps build a strong heart. It also helps most people lose weight. One 68-year-old woman runs three times a week. “I love to eat,” she says. She runs to lose weight.

Running is good for health in other ways, too. Many runners say running keeps colds and other small health problems away. “Running is my doctor, ” says one man.

Running can also help people to relax. So today men and women of all ages enjoy running.

1.Many people enjoy running because they want to___________ .

A.eat much B.keep healthy C.run fast D.waste time

2.Doctors tell us _____________.

A.not to smoke B.not to exercise

C.to drink much D.to eat much

3.The underlined word means “____________” in Chinese.

A.疾病 B.体重 C.速度 D.健康

4.The third paragraph shows_____________ .

A.running helps people to relax

B.people who like running have many health problems

C.running helps build a strong heart

D.people who like running have fewer health problems

5.The writer mainly tells us ___________.

A.how to run

B.how to lose weight

C.running is a good way to keep healthy

D.running is better than doctors

八年级英语阅读单选中等难度题查看答案及解析