Recently, some concerns have been raised about the health of the world's banana plants. Many media reports have said that bananas may completely disappear in the coming ten years.
Bananas are one of the world's most important food crops. They are also the fourth most valuable export. Bananas do not grow from seeds. Instead, they grow from existing plants. Bananas are threatened by disease because all the plants on a farm are copies of each other. They all share the same genetic weaknesses.
For example, the Cavendish banana is most popular in American markets. It is an important export crop. However, some kinds of fungus (真菌) organisms easily infect the Cavendish. Black Sigatoka disease affects the leaves of Cavendish banana plants. The disease is controlled on large farms by putting chemicals on the plant's leaves. Farmers put anti-fungal chemicals on their crops up to once a week.
Another fungal disease is more serious. Panama disease attacks the roots of the banana plant. There is no chemical treatment for this disease. Infected plants must be destroyed. Panama disease has affected crops in Southeast Asia, Australia and South Africa. There is concern that it may spread to bananas grown in the Americas. This could threaten an important export product for Central and South America.
The International Network for the Improvement of Banana and Plantain, whose headquarter lies in France, supports research on bananas. The group says that more research must be done to develop improved kinds of bananas.
The group says that fungal diseases mainly affect only one kind of banana. In fact, there are five-hundred different kinds of bananas. The United Nations Food and Agriculture Organization says the Cavendish banana represents only ten percent of world production.
The UN agency says farmers should grow different kinds of bananas. This protects against diseases that affect only one kind. Experts warn that disease may cause the Cavendish banana to disappear. This has already happened to one popular banana because of its genetic weakness against disease. (words: 335)
1.What does the passage mainly tell us?
A．Bananas are the world’s most important food crops.
B．There are five hundred different kinds of bananas.
C．The risk to a popular banana shows need to grow other kinds.
D．How to grow bananas in different countries.
2.Bananas are threatened by diseases because __________.
A．they have genetic weaknesses against disease.
B．they are one of the most valuable exports.
C．the only way to prevent it is to put chemicals on their leaves.
D．they grow from the seed
3.Panama disease__________.
A．doesn’t belong to fungal disease.
B．has spread to bananas in the world.
C．a(chǎn)ffects the leaves of banana plants.
D．destroys the bananas more seriously than Black Sigatoka disease.
4.We can infer from Paragraph 6 that ____________.
A．the center of the group is in the US.
B．the key to solving the disease is to research all kinds of bananas.
C．the Cavendish banana covers only a small part of the output of bananas.
D．each fungal disease affects five hundred different kinds of bananas.
5.According to the passage, which information is right?
A．The Cavendish banana can be mainly imported from North America and Europe.
B．Fungal diseases mainly affect the Cavendish banana.
C．The Cavendish banana won’t die out in the future.
D．Panama disease affects the leaves of banana plants.
1.C
2.A
3.D
4.C
5.B
【解析】
試題分析：本文介紹了世界上香蕉產(chǎn)量所面臨的危險(xiǎn)，有一種Cavendish banana正受到病菌的影響，導(dǎo)致產(chǎn)量的減少。
1.C 主旨大意題。本文講述了現(xiàn)在世界上的Cavendish banana收到病菌的影響，產(chǎn)量大減，我們需要有另外的品種的香蕉生產(chǎn)出來。故C項(xiàng)正確。
2.A 細(xì)節(jié)題。根據(jù)第二段最后兩行Bananas are threatened by disease because all the plants on a farm are copies of each other. They all share the same genetic weaknesses.
說明這些香蕉都有同樣的基因上的缺陷。故A正確。
3.D 細(xì)節(jié)題。根據(jù)第三段第三行Black Sigatoka disease affects the leaves of Cavendish banana plants.說明它影響的是香蕉的葉子，故D項(xiàng)正確。
4.C 推斷題。根據(jù)文章倒數(shù)第六段最后一行the Cavendish banana represents only ten percent of world production. 說明這種香蕉只占世界產(chǎn)量的百分之10，那么它只占產(chǎn)量的少部分。故C正確。
5.B 細(xì)節(jié)題。根據(jù)第三段2,3行However, some kinds of fungus (真菌) organisms easily infect the Cavendish. Black Sigatoka disease affects the leaves of Cavendish banana plants.說明這種病菌只影響Cavendish banana。故B正確。
考點(diǎn)：考查新聞報(bào)告類短文閱讀
點(diǎn)評(píng)：本文介紹了世界上香蕉產(chǎn)量所面臨的危險(xiǎn)，有一種Cavendish banana正受到病菌的影響，導(dǎo)致產(chǎn)量的減少。以細(xì)節(jié)題的考查為主，要求考生仔細(xì)地閱讀文章內(nèi)容結(jié)合題目要求和選項(xiàng)內(nèi)容作出適當(dāng)?shù)难由旌团袛嗤评怼?/p>
高中必刷題系列答案
| 年級(jí) | 高中課程 | 年級(jí) | 初中課程 |
| 高一 | 高一免費(fèi)課程推薦！ | 初一 | 初一免費(fèi)課程推薦！ |
| 高二 | 高二免費(fèi)課程推薦！ | 初二 | 初二免費(fèi)課程推薦！ |
| 高三 | 高三免費(fèi)課程推薦！ | 初三 | 初三免費(fèi)課程推薦！ |
科目：高中英語 來源：2012-2013學(xué)年陜西省長(zhǎng)安一中高一下學(xué)期期中考試英語試卷（帶解析） 題型：單選題
-Tom has a lot of parties recently.
- Yes, that may ________ why he didn’t do well in the test.
| A．sum up | B．a(chǎn)dd up to |
| C．a(chǎn)ccount for | D．make sense of |
查看答案和解析>>
科目：高中英語 來源：2013屆天津市大港區(qū)第一中學(xué)高三第二次月考英語試卷（帶解析） 題型：完型填空
I believe that families are not only blood relatives, but sometimes people who show up and love you when no one else will.
In May 1977, I was living in a Howard Johnson’s motel off Interstate 10 in Houston. My dad and I 1 a room with two double beds and the bathroom was too 2 for a 15-year-old girl and her father. Dad’s second marriage was 3 and my stepmother had 4 us both out of the house the previous week. Dad had no 5_ of what to do with me. And that’s when my other family 6 .
Barbara and Roland Beach took me into their home 7 their only daughter, Su, my best friend, asked them to. I 8 with them for the next seven years.
Barb washed my skirts the same as Su’s. She 9 I had lunch money, doctors’ appointments, help with homework and nightly hugs. Barbara and Roland attended every football game where Su and I were being cheerleaders. As far as I could tell, for the Beaches there was no 10 between Su and me; I was their daughter, too.
When Su and I 11 college they kept my room the same for the entire four years I attended school. Recently, Barb presented me with an insurance they _12_ when I first moved in with them and had continued to pay on for 23 years.
The Beaches knew 13 about me when they took me in – they had heard the whole story from Su. When I was seven, my mother died and from then on my father relied on other people to _14 his kids. Before I went to live with the Beaches I had believed that life was entirely 15__ and that love was shaky and untrustworthy. I had believed that the only person who would take care of me was me.
16 the Beaches, I would have become a bitter, cynical (憤世嫉俗的) woman. They gave me a(n) 17 that allowed me to grow and change. They kept me from being paralyzed(麻痹的) by my _18 , and they gave me the confidence to open my heart.
Now I 19 family. For me, it wasn’t the family that was there on the day I was 20 , but the one that was there for me when I was living in a Howard Johnson’s on Interstate
| 【小題1】 |
|
| 【小題2】 |
|
| 【小題3】 |
|
| 【小題4】 |
|
| 【小題5】 |
|
| 【小題6】 |
|
| 【小題7】 |
|
| 【小題8】 |
|
| 【小題9】 |
|
| 【小題10】 |
|
| 【小題11】 |
|
| 【小題12】 |
|
| 【小題13】 |
|
| 【小題14】 |
|
| 【小題15】 |
|
| 【小題16】 |
|
| 【小題17】 |
|
| 【小題18】 |
|
| 【小題19】 |
|
| 【小題20】 |
|
查看答案和解析>>
科目：高中英語 來源：2012-2013學(xué)年江西省白鷺洲中學(xué)高一下學(xué)期期中考試英語試卷（帶解析） 題型：完型填空
Sometimes, people are required to fill in personal information when they register online, which may lead to some unexpected trouble. Recently, the BBC is reporting that a 17-year-old girl in Australia posted a(n) 【小題1】 of her grandmother at home counting a large sum of cash that she 【小題2】 hidden in the house. Just eight hours later, two armed men 【小題3】 the girl’s house. They demanded to speak to her to find out where the grandmother’s house was, 【小題4】 they could get the money they had seen. 【小題5】 , the girl was not home at the time, so the robbers 【小題6】 a small amount of cash from the mother and left.
Because the 【小題7】 is still under investigation(調(diào)查), local police aren’t saying 【小題8】 else about it. It’s not known yet whether the girl had used privacy setting on the Facebook profile page, and even whether the robbers 【小題9】 the girl in the past.
Two other 【小題10】 were at home then, a 58-year-old man and a 14-year-old boy, the girl’s father and brother. Luckily, no one was 【小題11】 . The robbers left peacefully after 【小題12】 that the girl was not home and that no one else there knew anything about the 【小題13】 that had appeared in the photo.
Police in both Britain and Australia are using the case to 【小題14】 citizens of the dangers of posting personal information on social networks and to suggest users of websites 【小題15】 doing so. The police say it is 【小題16】 that the girl posted a comment in the past that gave clues to the address, 【小題17】 that the robbers knew the girl in another way. 【小題18】 , they suggest, a posting by a friend on their site could have 【小題19】 such information. To find it, the robbers would only have had to search for those posting on other pages that 【小題20】 the girl’s name.
| 【小題21】 |
|
| 【小題22】 |
|
| 【小題23】 |
|
| 【小題24】 |
|
| 【小題25】 |
|
| 【小題26】 |
|
| 【小題27】 |
|
| 【小題28】 |
|
| 【小題29】 |
|
| 【小題30】 |
|
| 【小題31】 |
|
| 【小題32】 |
|
| 【小題33】 |
|
| 【小題34】 |
|
| 【小題35】 |
|
| 【小題36】 |
|
| 【小題37】 |
|
| 【小題38】 |
|
| 【小題39】 |
|
| 【小題40】 |
|
查看答案和解析>>
科目：高中英語 來源：2012-2013學(xué)年遼寧省沈陽二中高一10月月考英語試卷（帶解析） 題型：完型填空
My 4-year-old son now enjoys posting letters. He has formed the 36 of drawing pictures, writing his name on them, and then 37 the artwork in an envelope. He then insists on 38 his handwork to the neighbors, and a mail box he 39 belongs to the elderly couple who live next door. To be 40 , I didn’t think much of it, but I had 41 to warn my neighbors of the drawings 42 appearing in their letterboxes—I just didn’t have the 43 to do so, because I was a little busy recently.
On Tuesday of last week, I was walking down to school to collect my son when I 44 Mary, my elderly neighbor, 45 at her mail box. She said, “Jodie, is it your little son that has been posting items in my letterbox to me?” I was at once 46 , “Oh yes, Mary, it is. I’m sorry. I meant to tell you…” She cut me off, “Jodie, I just love his mail. I’ve 47 every item he has sent. You don’t know how much 48 the letters has made my day. I just love them.” While I was walking down to school after our 49 , many thoughts came to me. Mary doesn’t have a lot to fill her days, 50 she was a mother to a number of children herself who receives fairly regular visitors. The small 51 of getting some mail—pictures drawn by the hand of a young child—has brought 52 to her days, just as my visit to my grandparents does.
I have decided that my son should 53 this practice. He should also start sending some items to his grandparents in Perth as well. It will most 54 make their day.
It’s doing the little, simple things that can often make a big 55 in someone’s life.
| 【小題1】 |
|
| 【小題2】 |
|
| 【小題3】 |
|
| 【小題4】 |
|
| 【小題5】 |
|
| 【小題6】 |
|
| 【小題7】 |
|
| 【小題8】 |
|
| 【小題9】 |
|
| 【小題10】 |
|
| 【小題11】 |
|
| 【小題12】 |
|
| 【小題13】 |
|
| 【小題14】 |
|
| 【小題15】 |
|
| 【小題16】 |
|
| 【小題17】 |
|
| 【小題18】 |
|
| 【小題19】 |
|
| 【小題20】 |
|
查看答案和解析>>
科目：高中英語 來源：2010-2011學(xué)年重慶市“名校聯(lián)盟”高二第一次聯(lián)考英語試卷（帶解析） 題型：閱讀理解
China has become Volvo's third largest market, with more of its car models to go on sale in the world's largest auto（汽車） market this year, Chief Executive Office (CEO) of Volvo Cars China said in Tianjin.
Alexander Klose, CEO of Volvo Cars China, told Xinhua at the Ninth Tianjin International Automobile Trade Show, being held from Friday to Wednesday.
Klose said Volvo Cars had entered a new time of fast development, adding that its sales volume in China roared in 2010.
Up to the end of September, Volvo's global sales volume was up 12.5 percent year on year（同年比）, compared with 52 percent year-on-year rise in China, he said.
Two new Volvo sales centers opened in Beijing within merely one week in early October, about two months after east China's ZhejiangGeely Holding Group Co acquired（購(gòu)得）the Swedish brand from the US auto giant Ford for $1.5 billion in early August.
Klose said he was confident of seeing tremendous(巨大的) growth in China's auto market in the next five years. "As the Chinese government has increased the tax rate for large displacement （排量）cars already, we now have a lot of cars below three liters（升）, and I think we'll stick to that strategy, as you can see now the XC60 which was introduced today is just two liters," he said.
"As the technology advances, we'll probably even see 1.6 liter engines or 1.5 liter engines in the future," he added.
Volvo Cars is not the only automaker hoping to take advantage of China's rapidly growing auto market.
Bentley, the famous British luxury（豪華） carmaker, will open a new sales center in China at Tianjin Thursday, which is the 11th one in China, according to a press release（新聞發(fā)布） by Shanghai-based Zenith Integrated Communications Corp (Zenith) Saturday at the auto show.
Zenth is the public relations agent of Bentley in China. The automaker has sold 421 limousines（大型豪華轎車） to China in 2009, and the goal for 2010 is 777, the release said.
【小題1】The word underlined in the third paragraph would probably be___.
| A．shouted loudly | B．increased in large numbers |
| C．reduced rapidly | D．burned brightly |
| A．The Ninth Tianjin International Automobile Trade Show was held from Friday to Wednesday. |
| B．Volvo Cars is a world-famous carmaker in Britain. |
| C．Of all the auto sales volume Volvo sales volume is only number one in China |
| D．Volvo sales centers are developing very fast in China recently |
| A．China Becomes Volvo's 3rd largest market |
| B．Volvo Cars in China |
| C．Volvo Sales Volume in China |
| D．Carmakers in China |
| A．One | B．Two | C．Three | D．Four |
查看答案和解析>>
國(guó)際學(xué)校優(yōu)選 - 練習(xí)冊(cè)列表 - 試題列表
湖北省互聯(lián)網(wǎng)違法和不良信息舉報(bào)平臺(tái) | 網(wǎng)上有害信息舉報(bào)專區(qū) | 電信詐騙舉報(bào)專區(qū) | 涉歷史虛無主義有害信息舉報(bào)專區(qū) | 涉企侵權(quán)舉報(bào)專區(qū)
違法和不良信息舉報(bào)電話：027-86699610 舉報(bào)郵箱：58377363@163.com