Rainforests, it turns out, are not created equal. Take the Amazon rainforest, an area that covers about 7 million square kilometers. But within that huge expanse are all kinds of ecological zones, and some of these zones, says Greg Asner, are a lot more crowded than others.

“Some forests have many species of trees,” he said, “others have few. Many forests are unique from others in terms of their overall species composition…” And all of these different small areas of forest exist within the giant space that is the Amazon Rainforest.

So Asner, using the signature technique called airborne laser-guided imaging spectroscopy, began to map these different zones from the air. “By mapping the traits of tropical forests from above,” he explains, “we are, for the first time, able to understand how forest composition varies geographically.”

The results show up in multicolored maps, with each color representing different kinds of species, different kinds of trees, the different kinds of chemical they are producing and using, and even the amount of biodiversity, the animal and plant species that live within each zone.

Armed with this information, Asner says decision-makers now have “a first-time way to decide whether any given forest geography is protected well enough or not. If not, then new protections can be put in place to save a given forest from destruction.”

Asner says the information is a great way for decision-makers to develop a “cost-benefit ratio type analysis.” Conservation efforts can be expensive, so armed with this information, government leaders can ensure they are making the most of their conservation dollars by focusing on areas that are the most biologically diverse or unique.

The next step, Asner says, is to take his project global, and to put his eyes even higher in the sky, on orbital satellites. “The technique we developed and applied to map Peru is ready to go global.” Asner said. “We want to put the required instrumentation on an Earth-orbiting satellite, to map the planet every month, which will give the best possible view of how the world’s biodiversity is changing, and where to put much needed protections.

1.Unequally-created rainforests refer to the fact ______.

A. how crowded they are

B. where they are located

C. when they came into being

D. what kinds of species they have

2.What can government leaders learn from Asner’s mapping?

A. The cost to conserve forests.

B. The chemicals needing for certain forests.

C. The forest areas needing special protection.

D. The number of animals living in a forest.

3.What is Asner planning to do now?

A. To send a satellite to map the world.

B. To track the change of biodiversity in the world.

C. To develop technology for mapping the globe.

D. To advertise his project around the world.

4.What does the passage mainly talk about?

A. Using eyes in the sky to map biodiversity.

B. Making a map of big forests in the world.

C. Learning about the biodiversity of Amazon forest.

D. Protecting the forest from being destructed.

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源：山西省2016-2017學(xué)年高二下學(xué)期第一次月考英語(yǔ)試卷 題型：閱讀理解

Science can't explain the power of pets, but many studies have shown that the company of pets can help lower blood pressure (血壓) and raise chances of recovering from a heart attack, reduce loneliness and spread all-round good cheer.

Any owner will tell you how much joy a pet brings. For some, an animal provides more comfort than a husband/wife. A 2002 study by Karen Allen of the State University of New York measured stress (緊張) levels and blood pressure in people - half of them pet owners –while they performed 5 minutes of mental arithmetic (算術(shù)) or held a hand in ice water. Subjects completed the tasks alone, with a husband/wife, a close friend or with a pet. People with pets did it best. Those tested with their animal friends had smaller change in blood pressure and returned most quickly to baseline heart rates. With pets in the room, people also made fewer math mistakes than when doing in front of other companions. It seems people feel more relaxed (放松)around pets, says Allen, who thinks it may be because pets don't judge.

A study reported last fall suggests that having a pet dog not only raises your spirits but may also have an effect on your eating habits. Researchers at Northwestern Memorial Hospital spent a year studying 36 fat people and their equally fat dogs on diet-and-exercise programs; a separate group of 56 people without pets were put on a diet program. On average, people lost about I1 pounds, or 5% of their body weight. Their dogs did even better, losing an average of 12 pounds, more than 15% of their body weight. Dog owners didn't lose any more weight than those without dogs but, say researchers, got more exercise overall-mostly with their dogs - and found it worth doing.

1.What does the text mainly discuss?

A. What pets bring to their owners.

B. How pets help people calm down.

C. People's opinions of keeping pets.

D. Pet's value in medical research.

2.We learn from the text that a person with heart disease has a better chance of getting well if

A. he has a pet companion

B. he has less stress of work

C. he often does mental arithmetic

D. he is taken care of by his family

3.According to Allen, why did the people do better with pets around when facing stressful tasks?

A. They have lower blood pressure.

B. They become more patient.

C. They are less nervous.

D. They are in higher spirits.

4.The research mentioned in the last paragraph reports that

A. people with dogs did more exercise

B. dogs lost the same weight as people did

C. dogs liked exercise much more than people did

D. people without dogs found the program unhelpful

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：湖北省荊門市2016-2017學(xué)年高二下學(xué)期3月月考英語(yǔ)試卷 題型：七選五

Public Speaking Training

△Get a coach

1., so get help. Since there are about a billion companies out there all ready to offer you public speaking training and courses, here are some things to look for when deciding the training that’s right for you.

△Focus on positives

Any training you do to become more effective at public speaking should always focus on the positive aspects of what you already do well. Nothing can hurt confidence more than being told that you aren’t doing well.2., so good public speaking training should develop those instead of telling you what you shouldn’t do.

△ 3.

If you find a public speaking course that looks as though it’s going to give you lots of dos and don’ts, walk away! Your brain is so full of what you’re going to be talking about. 4. As far as we’re concerned, there are basically no hard and fast rules about public speaking. Your audience can be your friends.

△You are a special person not a clone

Most importantly, good public speaking training should treat you as a special one, with your own personal habits. 5.. Your training course should help you bring out your personality, not try to turn you into someone you’re not.

A. You aren’t like anybody else

B. You already do lots of things well

C. Turn your back on too many rules

D. Check the rules about dos and don’ts

E. Whatever the presentation, public speaking is tough

F. The one thing you don’t want is for them to fall asleep

G. So trying to force a whole set of rules into it will just make things worse

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：河南省濮陽(yáng)市2016-2017學(xué)年高一下學(xué)期（期末）升級(jí)考試英語(yǔ)試卷 題型：七選五

Get a job.1..Even if parents give you money,earning your own pay puts you on a path to success by giving you the opportunity to learn time management,job responsibility,leadership skills,teamwork,and life skills.Also, earning your own pay puts money in your pockets,and what you do with your earnings should be put to you.

2.Pocket money,gifts,and pay will be your sources of income as a teenager.Learning to manage money starts with tracking how you spend that income.Create a money diary where you write down all your spending for a given time period,either weekly or monthly.3.

Save money.Once you earn money,it is very tempting to use it.As a teenager,it is easy to neglect saving money. In order to be more successful,learn that money can be saved for more important spending opportunities.4.Banks give opportunities to teenagers.Get advice and research before opening any accounts.Once you have one,figure out a monthly budget（預(yù)算）that helps you put aside money.

Control impulse（沖動(dòng)）buying.5.Small purchases can take a toll on your savings,and more often than not, those purchases could have been avoided.Controlling these impulses at a young age helps ensure better money management in life.

A.Track your expenses.

B.Buying is always easier than saving.

C.To help yourself save,open up an account.

D.Create a business at school.

E.Then,evaluate what you spend money on by deciding what is needed and what is entertainment.

F.Having your own job buildings positive characters and can help you mature.

G.You don't want to be given a $5 bill,and not have the change.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：安徽省滁州市九校2016-2017學(xué)年高二下學(xué)期期末聯(lián)考英語(yǔ)試卷 題型：短文填空

I had just visited my best friend in hospital with my mum, 1.hadn’t seen my friend since she’d gone into hospital six months earlier.

I knew where she was coming from as she was2.(grave) ill, but as I’d been visiting her every week I had stopped seeing the obvious; my friend3.(lose) most of her body weight and her hair was falling out, it wasn’t looking good.

After the visit I took my mum to the station4.(see) her off on her train; the mood was understandably bleak but I stayed positive as well you do, don’t you? I went to get 5. (we) some coffee and my mum some food for the journey. I misread the amount of my purchase and didn’t have enough money.

6.some reason, this was the straw that broke the camel’s back; I burst into uncontrollable7.(tear) as a massive queue was gathering behind me. A woman came up to me and offered to pay, putting an arm round my shoulder, no questions8.(ask).

I could barely say thank you through the confusion and the flood of emotion that was pumping through me 9. running off in embarrassment. After composing myself I ran round the station 10.(try)to find this kind lady to thank her properly but never did.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：山西省運(yùn)城市2016-2017學(xué)年高一下學(xué)期期末考試英語(yǔ)試卷 題型：完形填空

One Saturday morning I decided to walk into Liverpool city center and buy myself something. I didn't _______ anything, and I was just going to spend some _______! I stopped into a general________ to buy myself some sweets. While I was making up my mind, the door _______ and in walked a girl, four years old at the most. She was wearing a summer dress and sandals(涼鞋) _______ it was a bitterly cold day. She was not too _________, obviously from a poor family. She walked up to the counter(柜臺(tái)), ________up and placed a fifty pence coin on the glass. Then, she proudly announced she had _______ this up for her little__________ a teddy bear as a birthday gift and she_______ that one there. The woman behind the _______ told the little girl the teddy bear cost ________ 50 pence. The little girl tried another one, and another one, and another one.

I knew that_______ of the bears on display could be bought for 50 pence. I also knew that I could ________ buy the best bear there _______ the money I was going to waste that day—________ did I want to encourage a little girl to take money from ________?

The little girl changed her mind when I _______to buy a teddy bear for her. “Oh, well,” she ________to the world. “I’ll just give him mine then.”

“I'll just give him mine.” Didn’t sound like she was going to give him ONE of her teddies. She was going to give her little brother HER teddy, probably the ________teddy she had!

1.A. buy B. take C. need D. carry

2.A. time B. money C. strength D. energy

3.A. hospital B. school C. store D. restaurant

4.A. opened B. closed C. shook D. broke

5.A. as if B. unless C. even though D. until

6.A. clean B. warm C. shy D. nervous

7.A. stood B. reached C. got D. gave

8.A. saved B. brought C. picked D. put

9.A. cousin B. sister C. brother D. student

10.A. hated B. created C. decorated D. wanted

11.A. door B. counter C. window D. desk

12.A. more than B. other than C. rather than D. less than

13.A. any B. none C. all D. neither

14.A. easily B. especially C. difficulty D. hardly

15.A. by B. for C. with D. of

16.A. so B. as C. but D. because

17.A. parents B. strangers C. doctors D. relatives

18.A. hesitated B. covered C. calmed D. interviewed

19.A. announced B. pointed C. apologized D. advised

20.A. last B. best C. cheapest D. only

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：甘肅省武威市2016-2017學(xué)年高一下學(xué)期期末練習(xí)英語(yǔ)試卷 題型：短文改錯(cuò)

增加：在缺詞處加一個(gè)漏詞符號(hào)（∧），并在其下面寫出該加的詞。

刪除：把多余的詞用斜線（＼）劃掉。

修改：在錯(cuò)的詞下劃一橫線，（____）并在該詞下面寫出修改后的詞。

注意：1. 每處錯(cuò)誤及其修改均僅限一詞；

2. 只允許修改10處，多者（從第11處起）不計(jì)分。

My brother Tom was very selfish when he was a little boy. He did not want share things with other people. For example, when he bought a chocolate cake, he put them in a secret place where I couldn’t find . Then he ate it all by himself. He never helped other. He said he is busy. That is, a game of tennis making him very busy. He did not care if something he did made people angry. For instance, on one night he played strong and loudly music till four o’clock in the morning. But he is difference now. He often helps grandma with housework, helps mom with cooking and helps his classmate with their lessons.

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：廣東省揭陽(yáng)市、揭東一中2016-2017學(xué)年高一下學(xué)期期末聯(lián)考英語(yǔ)試卷 題型：完形填空

In 2012, I had just recovered from a serious illness when I received an invitation to a writer’s conference in Orlando, Florida. My family persuaded me that a(n)______might be just what the doctor ordered, so off I______.

Arriving in the Sunshine State was rather tiring, but I______to catch a taxi to my______and settle in. The next morning, I took another______to the shopping centre to buy a few souvenirs.______I went to a cafe to have lunch, but all the tables were______. Then I heard a friendly voice saying, "You can______my table."

I gratefully sat down with the______lady and we had a happy lunch together. As the______drew to a close she asked how long I would be in Orlando. I had already told her that I hadn't______a car, and hadn't realized how______taking taxis would he. After a while she said, "My dear, don't use any more taxis. I'm retired and it would be my pleasure to______you wherever you wish." I told her that I couldn't put her to that______,but she brushed aside my protests(反對(duì)). She asked me where I was______and the next morning she was waiting at my apartment at the______time to take me to Disney World. She spent some time with me before leaving me to______alone. At the end of the day, she______to take me back to my accommodation. I______her money but she refused to take any.

I'll never forget that wonderful lady who, through her______, filled my brief holiday in Florida with wonderful memories.

1.A. holiday B. ceremony C. operation D. experiment

2.A. kept B. went C. dropped D. knocked

3.A. intended B. promised C. managed D. deserved

4.A. hospital B. company C. university D. accommodation

5.A. colleague B. passenger C. suitcase D. taxi

6.A. Instead B. First C. Later D. Once

7.A. classified B. occupied C. decorated D. painted

8.A. share B. reserve C. set D. possess

9.A. old B. poor C. innocent D. stubborn

10.A. journey B. meal C. speech D. interview

11.A. donated B. repaired C. hired D. guided

12.A. convenient B. worthwhile C. unfortunate D. expensive

13.A. inspire B. entertain C. call D. drive

14.A. business B. argument C. trouble D. challenge

15.A. working B. staying C. moving D. shopping

16.A. appointed B. limited C. favourite D. regular

17.A. digest B. explore C. perform D. calculate

18.A. forgot B. refused C. returned D. preferred

19.A. sent B. lent C. offered D. owed

20.A. confidence B. dignity C. curiosity D. kindness

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：江蘇省連云港市2016-2017學(xué)年高一下學(xué)期期末考試英語(yǔ)試卷 題型：閱讀理解

Los Angeles Mayor Eric Garcetti on Tuesday declared April 25 as La La Land Day in front of the LA City Hall,in honor of this Oscar-winning movie which was filmed across Los Angeles.

The dedication ceremony kicked off by a jazz band,followed by aerial dancers dressed as the characters from the movie,performing a dance medley off the side of City Hall.

"It (La La Land) inspires our heart and inspires our city,"Garcetti said at the announcement,"Have a great La La Land Day!"

Hundreds of citizens joined for the festivities by the film's Oscar-winning director Damien Chazelle,Oscar-winning composer Justin Hurwitz,and a few other filmmakers.

"We made this movie;we wanted to make a love letter to Los Angeles,"producer Jordan Horowitz told Xinhua at the celebration,"thank you for embracing the picture that is about romance and love and lacks any kind of cynicism（憤世嫉俗）,looking the world in a relative clear-eyed way." The movie-musical tells a love story of a jazz pianist and an aspiring actress in Los Angeles.

La La Land swept the 89th Academy Awards' winner list including the Best Director,Best Actress,Best Original Score and Best Original Song among other awards but failed to clinch the Best Film and Best Actor trophy（獎(jiǎng)杯）.The film has grossed over 440 million US dollars at the global market.

1.Who acted in the movie La La Land?

A. Eric Garcetti and Damien Chazelle.

B. Justin Hurwitz and Eric Garcetti.

C. Damien Chazelle and Justin Hurwitz.

D. Ryan Gosling and Emma Stone.

2.What can we infer from the passage?

A. A jazz band didn't appear in the dedication ceremony.

B. Many citizens of LA got inspiration from the movie.

C. People will not enjoy the songs and dances in the movie.

D. The movie succeeded in winning the award—the Best Film.

查看答案和解析>>

同步練習(xí)冊(cè)答案