In science, people copy ideas from nature to ...

In science, people copy ideas from nature to solve problems or to create products. This is called biomimiery(仿生学). Its influence can be seen in many everyday products.

Nearly ten years ago, swimwear was influenced by nature. The Speedo Fastskin, a swimsuit, was seen at the Beijing Olympics and worn by 28 of the 33 gold medal winners. The technology is based on the rough patterns on a shark's skin, which allows the shark to swim faster.

Protecting astronauts' eyes from the sun's rays is very important but protecting their eyes from other dangerous radiation is also necessary. Scientists studied how eagles clearly recognize the animals they want to eat. They discovered that eagles have yellow oil in their eyes which fihers(过滤) out harmful radiation and allows them to see very clearly. They copied this oil and it is now used by astronauts and pilots in Eagle Eyes glasses. Besides protecting eyes from all the dangerous rays, these sunglasses also improve seeing in different weather conditions such as fog, sunlight or just normal light.

In another development, a car company has developed a new car which is based on the shape of the boxfish. Engineers chose to copy the boxfish skeleton(骨架) to make their Bionic Car because of its strength and low weight. Tile boxfish's bony body protects the animal's insides from injury in the same way as a car needs to protect the people inside it. This shape also means the car has less air resistance and so uses less fuel.

1.How many biomimicry products are mentioned in this passage?

_____________________________________________

2.What does the shark's skin allow a shark to do?

_____________________________________________

3.What special feature(特征) of eagle eyes was copied to make sunglasses?

_____________________________________________

4.What two features of a boxfish skeleton make it good for engineers to copy?

_____________________________________________

5.Do you think biomimicry will be more common in the future? Why or why not?

_____________________________________________

九年级英语任务型阅读困难题查看答案及解析

Four students ask for advice from Young Minds to solve their problems.

1.The man in Young Minds probably gave Mary advice on how to _______.

A. make friends B. change her personality

C. deal with bullying D. bully the girl in the street

2.Joanna got to know about Young Minds from　 _______.

A. a newspaper B. a magazine

C. the TV D. the Internet

3.From the sentence“I stood up to all of those awful people”，we know that　 _______.

A. Joanna used to go to school very happily

B. Joanna fought against being bullied

C. Joanna was brave before she talked to a lady

D. Joanna felt upset to meet such awful people

4.The underlined word “an amazing counselor” means“_______”.

A. a great friend B. a guide teacher C. a good player D. a nice writer

5.From Belinda, we know that _______.

A. she is a grade-7 kid

B. she was afraid of going to school

C. she was brave enough to call Young Minds

D. she could deal with the bully on her own

6.Which of the following is NOT TURE from the passage?

A. Mary was thought to be strange because she used to bully many people.

B. Joanna expected to return to school when the bully to her ended.

C. Miranda Kerr worked for Young Minds and helped Tracy out of being bullied.

D. If you want to get help from Young Minds, please dial 02070895050.

九年级英语阅读单选困难题查看答案及解析

Some people say they have a way to solve the problems of car crowding and pollution. In many cities, hundreds of people ____ bikes to work every day. In the New York City, some bike riders have even founded a group: Bike for a Better City. They say if more people ride bikes to work, there would be fewer cars and ____ dirty air.

For several years, this group has tried to gather help for bike riders. They want to have special roads ____ bikes only, because when bikes and cars use the same roads, there may be accidents. Bike for a Better City thinks if there were bike roads, more people would use bikes.

But no bike roads have been built ____. Not everyone thinks it is a good ____. Drivers don’t like it, and some shop owners don’t like it, ____. And most people live ____ far from the city that they can’t travel by bike. Still, ____ has been done about it. On Saturdays and Sundays, the largest open park in New York is ____ to cars, and the roads may be used by bikes only, but the group still says this is not enough and goes on ____ to get bike roads. I think there will be more bike roads in the future.

1.A.on B.ride C.by D.take

2.A.fewer B.less C.many D.more

3.A.until B.for C.as D.of

4.A.yet B.already C.still D.once

5.A.hope B.way C.help D.advice

6.A.so B.and C.also D.either

7.A.very B.quite C.too D.so

8.A.everything B.something C.anything D.nothing

9.A.closed B.open C.opening D.closing

10.A.fight B.fighting C.to fight D.fights

九年级英语完型填空中等难度题查看答案及解析

Scientists still have no idea how to solve the serious problem.（保持句意不变）

Scientists still have no idea how to _______ _______ the serious problem.

九年级英语同义句转化中等难度题查看答案及解析

He came up with a good idea to solve the problem.

A. caught up with　　 B. thought of

C. think of　　 D. found

九年级英语单选题中等难度题查看答案及解析

After discussing, the students __________ some good ideas to solve the problem.

A. put up　　　　　　　　 B. set up

C. caught up with　　　　 D. came up with

九年级英语单项填空简单题查看答案及解析

After discussing, the students __________ some good ideas to solve the problem.

A. put up 　　　　　 B. set up

C. caught up with D. came up with

九年级英语单项填空简单题查看答案及解析

We have to try harder and ____________ a better idea to solve the problem.

A. come on            B. come up with

C. come true        D. come out

九年级英语单项填空中等难度题查看答案及解析

After a while, he_____ good ideas to solve the problems.

A. caught up with　　 B. ended up with　　 C. came up with　　 D. followed up with

九年级英语单选题困难题查看答案及解析

After a week，he_______ good ideas to solve the problems.

A. caught up with   B. came up with   C. ended up with    D. followed up with

九年级英语单项填空中等难度题查看答案及解析