题目
题型:不详难度:来源:
A new report says virus may be at least partly responsible for the disorder in honey bee colonies in the United States. This virus is called Israeli acute paralysis virus. It was first identified in Israel in 2004. Ian Lipkin at Columbia University in New York and a team reported the new findings in Science magazine. Doctor Lipkin says the virus may not be the only cause. He says it may work with other causes to produce the collapse disorder.
The team found the virus in colonies with the help of a map of honey bee genes that was published last year. They examined thirty colonies affected by the disorder. They found evidence of the virus in twenty–five of them, and in one healthy colony. The next step is further testing of healthy hives.
The researchers suggested that the United States may have imported the disorder in bees from Australia. They say the bees may carry the virus but not be affected.
The idea is that unlike many American bees, the ability of Australian bees to fight disease has not been hurt by the varroa mite(全球性的蜂虱). This insect attacks honey bees, which could make the disorder more likely to affect a hive. Australian bee producers reject these suspicions.
And some researchers suspect that bee production in the United States is down mainly because of the weather. Honey bees gather nectar(花蜜) from flowers and trees. The sweet liquid gives them food and material to make honey. But cold weather this spring in the Midwest reduced the flow of nectar in many flowers. Many bees may have starved. Dry weather in areas of the country could also be playing a part.
Wayne Esaias is a NASA space agency scientist who keeps bees in his free time. He lives in central Maryland, where he has found that flowers are blooming a month earlier than they did in 1970, which may be partly responsible for the disorder. Wayne Esaias is organizing a group of beekeepers to document nectar flow around the country.
小题1:The researchers found the virus ______.
A.with the help of colony collapse disorder |
B.by researching the causes of bee death |
C.with the help of a map of honey bee genes |
D.with the help of a scientist of NASA |
A.American beekeeping industry has been strongly influenced by the bee disorder. |
B.Studies are being carried out on the causes of the bee disorder, but questions remain. |
C.How the causes of the bee disorder in U.S have been found. |
D.The bee production in U.S is down because of Israeli acute paralysis virus. |
A.Three. | B.Four. | C.Five. | D.Six. |
A.Israeli acute paralysis virus should be responsible for the disorder |
B.the solution to the bee disorder will be found eventually |
C.American bees are more likely to defend themselves than Australian bees |
D.the crop and plant production in U.S may be influenced by the bee disorder |
答案
小题1:C
小题2:B
小题3:A
小题4:D
解析
小题1:细节题。根据第三段第一行The team found the virus in colonies with the help of a map of honey bee genes可知C正确。
小题2:主旨大意题。文章主要讲述的就是对蜜蜂出现的问题的原因的研究,但是很多问题仍然没有被解决。
小题3:细节题。根据文章到书第4段可知可能是美国进口了澳大利亚收到感染的蜜蜂;倒数第2段提及了气候的原因,最后一段提到了植物提前开花的问题,一共提到了3个原因。
小题4:推断题。根据第一段最后一句Many crops and trees depend on pollination (授粉) by bees to help them grow.可知很多植物的授粉都要靠蜜蜂,写作蜜蜂出了问题,很多植物都要受到影响的。故D正确。
核心考点
试题【American beekeeping operations have been hit hard by what scientists call colony】;主要考察你对题材分类等知识点的理解。[详细]
举一反三
Sounds unusual, doesn"t it? But it"s not that unrealistic, with the development of China’s high—speed railway system. And that’s not all. China has an even greater high-speed railway plan—to connect the country with Southeast Asia, and eventually Eastern Europe.
China is negotiating to extend its own high·-speed railway network to up to 17 countries in 10 to 15 years, eventually reaching London and Singapore.
China has proposed three such projects. The first would possibly connect Kunming with Singapore via Vietnam and Malaysia. Another could start in Urumqi and go through Kazakhstan and Uzbekistan, and possibly to Germany. The third would start in the northeast and go north through Russia and then into Western Europe.
If China’s plan for the high-speed railway goes forward, people could zip over from London to Berlin in under two days.
The new system would still follow China’s high-speed railway standard. And the trains would be able to go 346 kilometers an hour, almost as fast as some airplanes.
China’s bullet train(高速客车),the one connecting Wuhan to Guangzhou, already has the World’s fastest average speed. It covers 1,069 kilometers in about three hours.
Of course, there are some technical challenges to overcome. There are so many issues that need to be settled, such as safety, rail gauge(轨距),maintenance of railway tracks. So, it’s important to pay attention to every detail.
But the key issue is really money. China is already spending hundreds of billions of yuan on domestic railway expansion.
China prefers that the other countries pay in natural resources rather than with capital investment. Resources from those countries could stream into China to sustain development.
It’ll be a win-win project. For other countries, the railway network will definitely create more opportunities for business, tourism and so on, not to mention the better communication among those countries.
For China, such a project would not only connect it with the rest of Asia and bring some much-needed resources, but would also help develop China’s far west. We foresee that in the coming decades, millions of people will migrate to the western regions, where the land is empty and resources unused. With high-speed trains, people will set up factories and business centers in the west once and for all. And they’11 trade with Central Asian and Eastern European countries.
小题1:China’s new high-speed railway plan will be a win-win project because .
A.China will get much-needed resources and develop its western regions |
B.China and the countries involved will benefit from the project in various ways |
C.China will develop its railway system and communication with other countries |
D.the foreign countries involved will develop their railway transportation, business and tourism |
A.technical issues |
B.safety of the system |
C.financial problems |
D.maintenance of railway tracks |
A.Critical. | B.Reserved. | C.Doubtful | D.Positive. |
A.New Railway Standards |
B.Big Railway Dreams |
C.High-speed Bullet Trains |
D.International Railway Network |
Buying for beginners: Sign up on www. ebay. co. uk. Most items(e.g. tables, computers, and books)ready for auction will come with a picture and a short description; others may be marked with “ Buy It Now ” and have a fixed price. You can buy these right away.
If the item is being auctioned, you offer the highest price you are prepared to pay and eBay bids(出价)for you. The bid will be increased little by little until it goes beyond your highest bid, then you are emailed and asked if you would like to bid again. Auctions last up to 10 days and when they finish you get an email telling you whether you have won the item.
How to pay: Sellers decide how they would like to be paid and you need to check this before placing a bid as you might not want to post a check or postal orders. The easiest way is through PayPal, an online payment system that takes the money away from your credit card (信用卡).
Selling made simple: If you plan to sell on eBay, it helps to include a picture of the item. I followed my friends’ advice and put up the items I wanted to sell for a 10-day auction, starting on a Thursday. This way buyers had two weekends to bid.
The big things in life: It’s easy to post a small item, but furniture is a big part of eBay and this has to be collected or sent by delivery men. Check the ways of delivery before you bid.
小题1:What is the passage mainly about?
A.How to make payment online. |
B.Ways of using delivery online. |
C.Advantages of an online-auction system. |
D.How to use an online-auction system. |
A.will get what he wants in ten days |
B.should make payment immediately |
C.has chances to make higher bids |
D.may check its picture and description |
A.through an online payment system |
B.through a local banking system |
C.by sending the money to the seller |
D.by paying the deliveryman directly |
By contrast, people have the same language, history, and culture in most Asian societies. As a result, Asia’s educational system reflects society’s belief in group goals and purposes rather than individualism. Children in China, Japan, and Korea learn to work together and help one another in assignments. And the teaching methods are often very formal and serious. In class, teachers give lectures while students listen and take notes. Discussion is replaced by reciting rules of information that have been memorized.
These two systems both have advantages and disadvantages. One advantage in Japan is that there is much more math and science than American students learn by the end of high school. In addition, students study more hours each day and more days each year than North Americans do. The difficult system also prepares students for a society that place emphasis on discipline and self-control. However, while memorization is an important learning method in Japanese schools, yet many students admit forgetting much of the information that they have memorized after exams.
On the other hand, the educational system in North American has an advantage that students learn to think for themselves, which prepares them for a society that values creativity. The disadvantage is that when they graduate from high school, they haven’t recited as many basic rules and facts as students in other countries have.
小题1:People in multicultural countries such as the US or Canada lay more stress on __________.
A.team work | B.self-control | C.discipline | D.individualism |
A.There is not much discussion. |
B.Learning to think for themselves |
C.Learning much less math and science |
D.They haven’t memorized basic rules and facts. |
A.Supportive | B.Opposite | C.Objective | D.Subjective |
A.cultural differences in countries such as the United States or Canada |
B.comparisons of educational system between North America and Asia |
C.there are more advantages of Asian education system of than that of North American |
D.there are more disadvantages of Asian education system than that of North American |
One Friday 38 the teacher told the class that those who had a hobby could have a 39 that afternoon to get the things they had made as parts of their hobbies ready for their 40 to see the following afternoon.
So in the afternoon, while those of the pupils who had nothing to 41 did their usual lessons, the lucky ones who had made something 42 to go home, on condition that they 43 before five o"clock to bring what they were going to show and to arrange it.
When the afternoon lesson began, the teacher was 44 to see Tommy was not there. He was the 45 boy in the class, and the teacher found it 46 to believe he had a hobby. However, at 4:45, Tommy arrived with a(n) 47 collection of butterflies in glass cases. After his 48 had admired them and helped him to arrange them on a table in the classroom, she was surprised to see Tommy 49 them up again and begin to leave.
"What are you doing, Tommy?" she asked. "Those things must 50 here until tomorrow afternoon. That"s when the parents are coming to see them."
"I know 51 ," answered Tommy, "and I will bring them back tomorrow; but my 52 doesn"t want them to be out of our house at night in case they are 53 ."
"But what has it got to do with your brother?" asked the teacher. "Aren"t the butterflies yours?"
"No," answered Tommy. "They belong to him."
"But Tommy, you are 54 to show your own hobby here, not somebody else"s!" said the teacher.
"I know that," answered Tommy. "My hobby is 55 my brother collecting butterflies."
小题1: |
|
小题2: |
|
小题3: |
|
小题4: |
|
小题5: |
|
小题6: |
|
小题7: |
|
小题8: |
|
小题9: |
|
小题10: |
|
小题11: |
|
小题12: |
|
小题13: |
|
小题14: |
|
小题15: |
|
小题16: |
|
小题17: |
|
小题18: |
|
小题19: |
|
小题20: |
|
The international space station (ISS) is an important step we should take in space exploration. It is not only helpful but also essential. It provides a proper space environment for many experiments that we have wanted to do for a long time. It is also a base for the observations of the earth and the universe. It could also be an important base for later travel to the moon and Mars. In a word, if we want to explore space more, the first thing we should do is to set up a space station.
As the space station costs a lot of money, it is hard for one country alone to establish one. The USA seems to be the only country that has the ability to build a space station alone,and it has tried to do so, but not very successful. So it aggregated many other countries to work on it together. Though it is still extremely expensive, it is much cheaper than doing it alone. It is really a job that needs everyone’s effort and will benefit everyone.
Led by the U.S. and Russia, the ISS is a joint project between six space agencies involving 16 countries. Called the greatest achievement in human cooperation, the ISS has come to the end of a ten-year’s hard work in construction. China has applied for participation in (taking part in) the project many times. Unfortunately all the applications were rejected, which drove China onto the path of independent development. As the Long March Ⅱ-F/T1 carrier rocket blasted off (leave the ground) and successfully carried the Tiangong-1 into space on September 29, 2011, China takes a big step toward its Space Station Era.
Some West media suggested that the successful launch of Tiangong-1 would disturb the balance of global space power, raising concerns (关注) about “China threat”. China’s space project is not designed for military (军事的) purpose but for developing space technology to explore space resources and make use of them for mankind’s well-being.
小题1:From Paragraph 2 we learn that ________.
A.the necessity of building the international space station is not realized now |
B.many experiments have been done in the international space station |
C.the international space station is necessary for people to explore space more |
D.people have traveled to Mars from the international space station |
A.That it requires a lot of money. |
B.That it needs everyone’s effort. |
C.That it will benefit every participating country. |
D.That it is too far away from the earth. |
A.united | B.scolded | C.allowed | D.forbade |
A.break the balance of global space power |
B.show that China can build space station alone |
C.raise international concerns about “China threat” |
D.make use of space peacefully for mankind’s well-being |
最新试题
- 1四边形ABCD的对角线AC和BD相交于点O,设有下列条件:①AB=AD;②∠DAB=90°;③AO=CO,BO=DO;④
- 2南京红山动物园为迎接从四川来的大熊猫了建立了专门的大熊猫馆,建立青海湖鸟岛自然保护区保护斑头雁等鸟类,对捕***藏羚羊者绳之
- 3下列叙述中正确的是 [ ]A、含金属元素的离子,不一定都是阳离子B、在氧化还原反应中,非金属单质一定是氧化剂 C
- 4已知为等差数列,,,则___________.
- 5已知不等式组表示的平面区域为,若是区域上一点,,则斜率的取值范围是 .
- 6完形填空。 Not too long ago, an incident that happened at Wal
- 7青蛙的受精卵发育成蝌蚪是在____ __中进行的,青蛙的成体具有_______等适应陆地生活的结构,其幼体和成体在形
- 8不同时期对中国近代历史发展的基本线索的概括,反映着当代学者对历史发展方向的认识不断深化。阅读下列材料,回答问题:材料一:
- 9禁止近亲结婚的科学依据是后代A.易患传染病B.一定患遗传病C.成活率极低D.患隐性遗传病几率增大
- 10实验室制备少量硫酸亚铁晶体的实验步骤如下:取过量洁净的铁屑,加入20%%~30%的稀硫酸溶液,在50℃~80℃水浴中加热
热门考点
- 1下列细胞能成功用于做质壁分离实验材料的是[ ]A.人的口腔上皮细胞B.洋葱根尖分生区细胞C.叶的下表皮细胞D.用
- 2[选修3-3模块]某压力锅结构如图所示,盖好密封锅盖,将压力阀套在出气孔,给压力锅加热,当锅内气体压强达到一定值时,气体
- 3如图所示,将废旧灯泡的灯丝接入电路,给灯丝缓慢加热,电流表示数变小,小灯泡亮度将______,这一现象说明______.
- 4Tom, ____ his parents, ____ gone to plant trees on Tree-plan
- 5如图7所示,是《用圆锥摆粗略验证向心力的表达式》的实验,实验步骤如下: (1)用秒表记下钢球运动n圈的时间t。(2)通过
- 6一组按规律排列的数:14,39,716,1325,2136…,请你推断第7个数是______.
- 7阅读材料:材料一:平均主义泛滥,供给制,公共食堂吃饭不要钱,干不干一个样,干多干少一个样。——刘宗绪《历史学科专题讲座》
- 8已知双曲线x2m-y2=1的右焦点恰好是抛物线y2=8x的焦点,则m=______.
- 9在区间[0,1]上给定曲线y=x2,试在此区间内确定点t的值,使图中阴影部分的面积S1与S2之和最小.
- 10如图1,两半径为r的等圆⊙O1和⊙O2相交于M,N两点,且⊙O2过点O1.过M点作直线AB垂直于MN,分别交⊙O1和⊙O