More than 40 percent of the species that help...

More than 40 percent of the species that help with pollination (植物传粉) are under threat due to the polluted environment. So some researchers have been searching for ways to protect the bees and other crucial pollinators while some engineers have thought perhaps an army of robotic pollinators could keep humans well-supplied in these foods. A team of researchers has recently designed a small drone capable of pollinating flowers. They tested their device on the large, pink flowers of lilies. And it worked.

Exciting as this success was, it is only the first step. The team has yet to figure out how to apply the concept on the massive scale. Could a fleet of robo-pollinators replace the bees?

“Although the answer isn’t a straightforward no, it would be a challenging leap to go from this one little drone pollinating one large flower to an army of drones spreading across fields of crops,” says Scott Swinton, an agricultural economist at Michigan State University.

“The successful pollination was fascinating,” Scott Swinton says, “but the device itself might damage the flowers. I wonder how you make sure you’re not doing more harm than good to flowers when you have a drone.”

“Furthermore,” he points out, “a lily is a particularly easy flower for a drone to pollinate. To make this more broadly applicable for smaller and more complex flower structures, the drones would need to be particularly agile.”

Still, Joshua Campbell, an expert at the University of Florida, says “Pollination systems are extremely complex and will always require insects. There is no substitute for bees.”

“As for the technology itself, it is a promising new development in existing drone technology,” he added. Yet he still sees some hurdles ahead before drones can be applied on a large scale.

1.What makes those scientists invent pollinating drones?

A. There are no satisfying pollinators.

B. Humans need more food supplies.

C. Pollinating species are being endangered.

D. Drone technology is well-developed now.

2.What problem does Scott think scientists have to solve for the robo-pollinators?

A. Making them look like bees. B. Using them in quantity.

C. Keeping them flying non-stop. D. Instructing them to tell plants.

3.The underlined word “agile” in Para 6 can be replaced by “________”.

A. cheap B. catchy

C. lovely D. smart

4.What’s the best title for the passage?

A. Will pollinating drones take over for honeybees?

B. What is leading pollinating honeybees to decline?

C. Why does pollinating need a money-saving option?

D. How did researchers invent pollinating drones?

高三英语阅读理解中等难度题查看答案及解析

More than half of UK species have suffered declines in recent years and 15 percent are at risk of vanishing (消失), a report has warned. There is little evidence to suggest the rate of loss is slowing down.

Farming is key to what is happening,with more intensive agriculture affecting nearly half of the species studied and responsible for nearly a quarter of the total impact on wildlife. A loss of mixed farms, changes to sowing patterns,increased use of pesticides and fertilizers and a loss of habitat (栖息地）have taken their toll. The report said government farming policies had led to dramatic changes in farming practices,almost doubling wheat and milk yields since the 1970s, but often at the expense of nature by interrupting the food sources and habitats species rely on.

Climate change is also increasingly affecting UK nature although the impacts are mixed with some species spreading north or surviving better in warmer winters, but others are hit by the loss of coastal habitat, increased sea temperature and wilder weather. In the long term, global warming poses one of the greatest threats to nature around the world. Wildlife is also being hit by urban development, loss of town green areas, changes to the way land and forests are managed and over-abstraction (过度抽取)of water.

“The natural world needs our help as never before,” said naturalist and TV presenter David Attenborough. “We must work together, governments, conservationists, businesses and individuals to help it.”

The good news is that the creation of new wetland by conservation programs and the planting of new woodland, as well as wildlife-friendly farming programs, are providing habitats for struggling species. Reintroduction of species such as the pine marten (松貂)and large blue butterflies is also helping, but more needs to be done, the report said.

1.What does the underlined phrase “taken their toll” in Paragraph 2 mean?

A.Cost much money. B.Had bad effects.

C.Changed farming policies. D.Interrupted the food sources.

2.What is the main cause of UK species decrease?

A.The development of agriculture.

B.The over-use of water.

C.The change of climate.

D.The loss of habitats.

3.What does the author intend to tell us in the last sentence?

A.More large blue butterflies are needed in UK.

B.More should be done for the diversity of species.

C.The report sounds the alarm for the UK’s wildlife.

D.Enough measures have been taken to protect the natural world.

4.Where is this text most likely from?

A.A poster. B.A brochure.

C.A magazine. D.A notice.

高三英语阅读理解中等难度题查看答案及解析

A new survey finds that more than eighty percent of Internet users in the United States search for health information online．The survey found that searching online is one of the leading ways that people look for a second opinion though doctors are still the main source of health information．

Forty-four percent of people are actually looking for doctors or other providers when they search for health information online．Another finding of the survey: Two-thirds of Internet users look online for information about a specific disease or medical condition．

The Internet has also become an important source of emotional support for people with health problems．Susannah Fox says one in five Internet users has gone online to find other people who have the same condition．It was more popular among people with more serious health issues—one in four people living with chronic diseases （慢性病）．And it was basically off the charts with people living with rare disease．They are so eager to find other people online who share their health concerns．

A disease is considered rare if it affects fewer than two hundred thousand people worldwide．The rise of social networking has made it easier for people with rare diseases to connect with each other and feel less alone．Social networking is also changing the way some doctors and patients communicate with each other．Dr．Jeff Livingston operates a medical center for women in Irving, Texas．His office uses password-protected software to share information with patients．

“We provide the patient full access to their medical care．Anything I can see, the patient can see．All of their notes, all of their doctor visits are right there．All of their lab work is right there．” Dr．Livingston says the software has increased efficiency, reduced costs and improved relations with patients．

1.From the first paragraph, we can know _________．

A．most online health information is reliable

B．more people now turn to the Internet for medical advice

C．people shouldn’t rely on the Internet for medical advice

D．doctors are no longer the patients’ first choice

2.The underlined words “off the charts” in Paragraph 3 mean _________．

A．very popular

B．not accessible

C．far away from

D．not attractive

3.By using social networking, patients with rare diseases can _________．

A．find effective cures

B．get emotional comfort

C．ask for financial support

D．consult doctors anytime

4.Which of the following is NOT true for Dr．Livingston’s software?

A．It cuts down medical expenses．

B．It decreases the time spent on medical care．

C．It takes doctors closer to their patients．

D．It gives patients a medical test online．

高三英语阅读理解困难题查看答案及解析

A new survey finds that more than eighty percent of Internet users in the United States search for health information online. The survey found that searching online is one of the leading ways that people look for a second opinion though doctors are still the main source of health information.

Forty-four percent of people are actually looking for doctors or other providers when they search for health information online. Another finding of the survey: Two-thirds of Internet users look online for information about a specific disease or medical condition.

The Internet has also become an important source of emotional support for people with health problems. Susannah Fox says one in five Internet users has gone online to find other people who have the same condition. It was more popular among people with more serious health issues—one in four people living with chronic diseases (慢性病). And it was basically off the charts with people living with rare disease. They are so eager to find other people online who share their health concerns.

A disease is considered rare if it affects fewer than two hundred thousand people worldwide. The rise of social networking has made it easier for people with rare diseases to connect with each other and feel less alone. Social networking is also changing the way some doctors and patients communicate with each other. Dr. Jeff Livingston operates a medical center for women in Irving, Texas. His office uses password-protected software to share information with patients.

“We provide the patient full access to their medical care. Anything I can see, the patient can see. All of their notes, all of their doctor visits are right there. All of their lab work is right there.” Dr. Livingston says the software has increased efficiency, reduced costs and improved relations with patients.

1.From the first paragraph, we can know _________.

2. The underlined words “off the charts” in Paragraph 3 mean _________.

3. By using social networking, patients with rare diseases can _________.

4. Which of the following is NOT true of Dr. Livingston’s software?

高三英语阅读理解中等难度题查看答案及解析

Social networking isn’t only for the under 40s. More than 25 percent of Americans 50 years and older stay connected using sites such as Facebook, MySpace and Twitter, according to new research.

“The latest data tells us that more and more social networking is becoming a part of everyday life for Americans 50 plus,” said Kevin Donnellan, the chief communications officer at AARP, which released （发布）the report.

Nearly a quarter of older Americans are on Facebook and 73 percent said they use it to stay in touch with relatives, but not just their children and grandchildren. “They are using the Internet to keep up with the world and the people who are important to them,” said Jean Koppen, the author of the report. She added that older adults are also on Facebook to stay connected, not only with their family, but with their friends and those in the same age group. Almost 50 percent of older adults were introduced to the social networking sites by a family member, mainly a child or grandchild. “Just under one-fifth of adults aged 50 and older say they do not use the Internet,” according to the report.

The findings are based on a telephone survey of 1,863 adults. In addition to keeping up on Facebook and Twitter older adults are aware of the latest technology. Eighty-three percent had heard about the Apple iPad and 11 percent intended to buy one.

Despite the popularity of the Internet among the over 50s, they still mostly go to print newspapers and magazines for news. Only one percent said they followed blogs.

1.What is the main idea of the text?

A.Social networking isn’t for the under 40s in the U.S.A.

B.American old people’s way of life is quite fashionable.

C.Social networking is becoming popular among older Americans.

D.Facebook, MySpace and Twitter are the most popular websites in the US.

2.Which of the following statements is TRUE according to the passage?

A．85% of Americans 50 plus choose the Internet over print media.

B．About 460 people in the telephone survey often use Facebook.

C．About 20% of adults aged 50 plus have access to (利用)the Internet.

D．Three quarters of the people surveyed got to know the Internet through their family.

3.Where does the text probably come from?

A．A novel.                              B．A newspaper.

C．A technology guide.                     D．A student’s research paper

高三英语阅读理解中等难度题查看答案及解析

Social networking isn’t only for the under 40s. More than 25 percent of Americans 50 years and older stay connected using sites such as Facebook, MySpace and Twitter, according to new research.

“The latest data tells us that more and more social networking is becoming a part of everyday life for Americans 50 plus,” said Kevin Donnellan, the chief communications officer at AARP, which released （发布）the report.

Nearly a quarter of older Americans are on Facebook and 73 percent said they use it to stay in touch with relatives, but not just their children and grandchildren. “They are using the Internet to keep up with the world and the people who are important to them,” said Jean Koppen, the author of the report. She added that older adults are also on Facebook to stay connected, not only with their family, but with their friends and those in the same age group. Almost 50 percent of older adults were introduced to the social networking sites by a family member, mainly a child or grandchild. “Just under one-fifth of adults aged 50 and older say they do not use the Internet,” according to the report.

The findings are based on a telephone survey of 1,863 adults. In addition to keeping up on Facebook and Twitter older adults are aware of the latest technology. Eighty-three percent had heard about the Apple iPad and 11 percent intended to buy one.

Despite the popularity of the Internet among the over 50s, they still mostly go to print newspapers and magazines for news. Only one percent said they followed blogs.

1.What is the main idea of the text?

A.Social networking isn’t for the under 40s in the U.S.A.

B.American old people’s way of life is quite fashionable.

C.Social networking is becoming popular among older Americans.

D.Facebook, MySpace and Twitter are the most popular websites in the US.

2.Which of the following statements is TRUE according to the passage?

3.Where does the text probably come from?

高三英语阅读理解简单题查看答案及解析

He called the police for help, ________that the problem was more than he could deal with.

高三英语单项填空简单题查看答案及解析

It is reported that 40 percent of the land in Brazil________covered with trees.

A．is　         B．was　     C．are　         D．were

高三英语单项填空中等难度题查看答案及解析

Facebook is one of the most popular websites that offer social networking today with more than l billion users around the world. Online social networking is just like-minded people coming together for some activities, forming groups, having discussions, sharing photographs, etc. Similarly, Facebook enables all these activities by various applications(运用程序) , for example, providing forums, photo sharing options. video updating, keeping a track on all the happenings in their formed communities, people they have approved to be linked to, etc. Online gaming is one of the biggest USPs(独特的卖点) of Facebook, and indeed, games like Farmville and Mafia Wars have attracted many users to the site. Facebook also offered a brilliant platform for business to reach out to their customers.

In the beginning, Facebook was just meant for Harvard University students to find and contact fellow students. It was meant to serve the purpose of keeping track of who was new to college to get in touch with each other for project purposes.　 It was an online directory(目录) , and was founded in 2004 0n the Harvard University campus. However, as soon as it was launched, almost two thirds of the total number of students registered themselves on Facebook. Mark Elliot Zuckerberg, along with Chris Hughes, Dustin Moskovitz. and Eduardo Saverin. helped in the launch of the site. To pursue this, Mark dropped out of Harvard and got into making Facebook a worldwide accessible site, and then to its current stand of being the top social networking site in the world.

Today, Facebook rules the social networking world, with one person in fourteen using it. It is also the second most popular site in the US, and is worth billions of dollars. And it has been a success story for the four co-founders, making them all accidental billionaires.

Title :　 Facebook-the most popular social networking site in the world

I . Definition :

*One popular website　　 　 1.　　

Ⅱ.　 　 2.　 :

* Enabling people to gather for 3.　　 　 0n it

* 　 4.　 　

* Offering a brilliant platform for businesses to reach out to their customers

Ⅲ　　 Birth :

* Time: in 2004

* Place: 　　 5.

lV. 　　 6.　　 :

* To help students contact each other

V.　 　 7.　　 :

* Mark Elliot Zuckerberg, along with Chris Hughes, Dustin Moskovitz, and Eduardo Saverin

VI. Popularity:

* As an　　 　 8.　 　　 : having almost two thirds of the students on it

* As the top social networking site :

　　　　　　　　　　　　　　　　　　　　　　　　　　　 ruling　 the social networking ;

　　　　　　　　　　　　　　　　　　　　　　　　　　　 having over　　　 9.　　 　 in the world;

　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 being 　　 10.　　 　 billions of dollars

高三英语其他题中等难度题查看答案及解析

It is reported that more than half of ________ surveyed on the website say they are content with their current life.

A. whom                B. them                C. ones                D. those

高三英语单项填空中等难度题查看答案及解析