Tiny transmitters(发射机) fixed on the backs of the blue-green bees have allowed scientists to follow the insects as they fly for miles in search of rare flowers.
Working in Panama, scientists caught 17 bees of the common species and fixed a 300 milligram radio light onto the back of each. The signals they sent out were used to follow their movements in and around the forest where they lived.
Professor Martin, from Princeton University, US, and the Max Planck Institute for Ornithology in Germany, said, “By following the radio signals, we discovered that male bees spent most of their time in small centre areas, but could take off and visit areas farther away. One male even crossed over the shipping lanes in the Panama Canal, flying at least 5km, and returned a few days later.”
Researchers have struggled to follow the movements of bees before, following bees marked with paint or using radar which doesn’t work well in forests.
“Carrying the transmitter could reduce the distance that the bees travel, but even if the flight distances we record are the shortest distances that these bees can fly, they are impressive, long-distance movements,” said Dr. Roland Kays, from New York State Museum, a co-author of the research published today in the on-line journal. “This result helps to explain how these bees’ pollination(授粉) can be so rare.” Pollination by bees and other insects is the key to the diversity and continued growth of flowers and trees in some forests.
The new study is the first to use radio transmitters to follow bees in a forest. Similar research may now be carried in temperate forests, where bees also play a vital role.The main purpose of the passage is to___
| A．call on people to protect the bees for the environment |
| B．explain why the bees fly far away in search of flowers |
| C．introduce a modern way to follow the bees to readers |
| D．encourage the public to support the scientists’ research |
What was the problem when researchers tried to follow the bees in the past?
| A．It was quite difficult to mark the bees |
| B．The radar itself didn’t work very well |
| C．The bees weren’t easy to be recognized |
| D．Environmental limits were hard to solve |
What Dr. Roland Kays said implied that____
| A．he didn’t expect bees could fly so long a distance |
| B．The transmitter didn’t have any effects on bees at all |
| C．He wanted to know how far bees could travel badly |
| D．The record was in fact as exact as he had thought |
Researchers follow the movements of bees mainly to___
| A．learn how far they can fly at most |
| B．discover how they affect the plants |
| C．correct some wrong ideas about bees |
| D．get to know where they enjoy living |
techniques , but he admitted there would be difficulties in meeting his goal .
“ For example , if you run out of ink while printing on paper , you will throw that paper away . But you cannot throw half-completed buildings away if your material gets stuck , ” he said . Although the printed house is not available to visit , there is a chance for people in Shanghai to see items printed in 3D.
The Belgium-based company Materialise NV held a 3D printing exhibition in Shanghai that started in late 2012 and ended in the middle of 2013 . The company is eager to show Asia what is possible with 3D printing .
“ All the pieces shown here are what cannot be made through traditional techniques . A good example of this customization is hearing aids . More than 10 million people already use 3D printed hearing aids, all made according to the size of their ears , ” said Wim Michiels , executive vice-president at Materialise NV .
“ You can produce anything whenever and wherever you like . You don’t need to set up production lines for pieces that only need a limited amount of products . Setting up a production line is a lot of work . It takes a long time and is very expensive for a limited number of pieces , ” said Michiels .
Kim Francois , managing director of Materialise China , said their European and American clients have already taken the next step toward additive manufacturing with small series production such as hearing aids .What is mainly talked about in the text ?
A. The development of 3D printing .
B. A 3D printing show in Shanghai .
C. Varieties of items printed in 3D .
D. The company Materialise NV .According to Behrokh Khoshnevis , what is the main difficulty in printing buildings ?
| A．Time . | B．Technique . | C．Space . | D．Material . |
The example of 3D printed hearing aids was mentioned to show that ______________ .
| A．these items used to be impossible to make |
| B．3D printing has a large market share |
| C．3D hearing aids help people hear better |
| D．people need different sized hearing aids |
According to the text , 3D printing is suitable for ___________ .
| A．mass production |
| B．making small items |
| C．small series production |
| D．reducing production costs |
I feel it enormous responsibility, as a mother of two little girls, to lead you down a path that is relatively healthy when it comes to beauty and self-image.
In a lot of women’s eyes I’ve probably already failed in that respect due to the amount of pink princess Barbie (芭比娃娃) mess cluttering up (堆满) Vera’s room. But I will say something about Barbie: I played with that stuff for a solid decade when I was growing up and here I am now at a healthy weight with a healthy outlook on my body and image. I have a successful career. If Barbie was really so damaging to my femininity (女性气质) and self-image I highly doubt I could list all of the accomplishments.
But I get it too. It’s hard for women to maintain a healthy self-image. I have girlfriends around whom I have to brace myself to see, because just being around them makes me self-conscious. I look at old pictures of my mother and wonder why I’ve never been able to be as skinny as she was. And then I have friends who are thinner than their mothers ever were. We women go round and round in circles, holding hands and trying to be one another sometimes. Men like to think we dress and style ourselves for them, but why would we when they hardly notice? I’ve never tried so hard to look good when I know I’m about to meet up with a stylish girlfriend. It’s she who will notice my slimmed-down waist or the thinnest, little bracelet on my arm.
And I have no doubt that the two of you, Veronica and Juliette, will endlessly compare yourselves to each other. You will wonder why one of you got longer legs or shinier hair. The thing I’ll tell you is this: not even the prettiest of us feel settled. The girl you think looks the most perfect in the world is probably the girl who wants to change herself more than anyone else.
Don’t take these on. You are not worthless. You are so full of love and light and you should let it shine through your every second. If someone pushes you down for standing tall then just push yourself back up and stand even taller. And know that the reason they push you down in the first place is just because they’re scared.From the second paragraph, we can infer that the author _____.
| A．regrets buying so much Barbie stuff for her daughters |
| B．thinks loving Barbie makes her not confident about her self-image |
| C．owes her beauty and success to playing with Barbie |
| D．thinks playing with Barbie caused no damage to her beauty and success |
In the third paragraph, the author intends to show that _____.
| A．women tend to be proud of their beautiful friends |
| B．she cares much about her appearance |
| C．she feels proud of her mother’s beauty |
| D．women tend to admire others and compare with each other |
Which of the following is true according to the passage?
| A．The author is disappointed that few men take notice of her slim figure. |
| B．The author cares more about looking good before her girlfriends. |
| C．Girls should constantly compare themselves with others to improve their beauty. |
| D．Only the prettiest girl can feel confident about her beauty. |
The author advises her daughters that _____.
| A．they should be cautious not to be pushed down by others |
| B．they should care much about their strong points instead of appearances |
| C．they should try to grow taller than others |
| D．they should care more about others’ opinions |
A month went by in this manner , but a month was all I could bear .
The memory of Marguerite accompanied me wherever I went . I had loved that woman --- still loved her --- too much for her suddenly to mean nothing to me . Whatever feelings I might have for her now , I had to see her again . At once .
…
I knew Marguerite . Meeting me so unexpectedly must have thrown her into a state of great confusion . Probably , she had heard of my departure which had set her mind at rest as to the consequences of our sudden parting . But , seeing me back and coming face to face with me , pale as I was , she had sensed that my return had a purpose , and must have wondered what was going to happen .
If , when I saw her again , Marguerite had been unhappy ; if , in taking my revenge （复仇）, there had also been some way of helping her , then I might well have forgiven her , and would certainly never have dreamed of doing her any harm . But when I saw her again , she was happy , at least on the surface . Another man had ensured her the luxury （奢侈）in which I had been unable to keep her . She brought shame both to my pride and my love ; she was going to have to pay for what I had suffered .
I could not remain indifferent （冷漠）to what she did now . It followed that the thing that would hurt her most would be exactly for me to show indifference . Indifference , therefore , was the feeling which I now needed to pretend , not only in her presence but in the eyes of others .
I tried to put a smile on my face , and I went to call on Prudence with whom Marguerite was staying .
Prudence saw me to the door , and I returned to my apartment with tears of anger in my eyes and thirst for revenge in my heart and thought only of finding a way to make the poor creature suffer .This passage is most probably _______________ of a love story .
| A．the beginning | B．the introduction | C．a summary | D．a chapter |
According to the passage , the hero（男主角）wanted to _____________ .
| A．forgive Marguerite because he found her unhappy |
| B．stop the relationship with Marguerite because he couldn’t keep her in the luxury |
| C．make up the relationship with Marguerite because he still loved her |
| D．give Marguerite sufferings because his pride and his love were hurt |
What kind of feelings did the hero most probably have ?
| A．Indifference and love . |
| B．Indifference and hate . |
| C．Love and hate . |
| D．Hate and sadness . |
What would the author most probably write about next ?
| A．Why he changed his mind suddenly . |
| B．How he made up his relationship with Marguerite . |
| C．How he made Marguerite suffer. |
| D．Why he wanted Marguerite to pay for what he had suffered . |
Not long ago, few little girls imagined they could grow up to become astronauts. For years in the United States, on1y men had that opportunity . In 1983, that changed. Sally Ride made history by becoming the first American woman to travel to space.
On Monday, Ride died at the age of 61, ‘‘Sally was a national hero and a powerful role model,”President Barack Obama said in a statement. “She inspired generations of young girls to reach for the stars.”
Ride became interested in space when she was a kid. “If you asked me when I was 12 whether I wanted to be an astronaut ,I’m sure I wou1d have said yes,” she said in a 2010 interview . “ But I didn’t even think about that as a possible career.”
After studying physics in college and graduate school, Ride got her chance. She was accepted into NASA’s astronaut training program in 1978, and then chosen to be the first American female in space. In 1983, she blasted into space aboard the Challenger shuttle.“There is no amusement park ride on the Earth that even comes so close,” she said.
Ride returned to space on the Challenger a second time in1984 . Between the two missions, she spent a total of 343 hours in orbit. After that, she remained involved with the space program and also worked to share her passion for science with kids. She co-authored six science books for children , and started her own science education company.
Ride knew that she he1d a unique place in history . “ I realized how important it was for a woman to break that barrier and open the door for other women to be able to do the same exciting things that the men had been doing,” she said.
Since Ride’s historic trip, more than 40 other American women have traveled to space. They all had Ride to thank for opening the door to the final frontier.Sally Ride was regarded as a national hero because she___________ .
| A．was the first American to travel to space |
| B．opened a door for women to find jobs suitable for them |
| C．became the first American female in space |
| D．was the first to travel on the Challenger |
By saying ‘‘There is no amusement park ride on the Earth that even comes so close”, Ride really meant____________ .
| A．she preferred a ride in an amusement park on the Earth |
| B．the trip to space was like that in an amusement park |
| C．she came close to an amusement park on the Earth |
| D．the trip to space was far more interesting than any ride on the Earth |
The correct order of the following events that happened to Sally Ride is_____________
a. accepted into an astronaut training program
b. spent a total of 343 hours in orbit
c. co-authored six science books for children
d. traveled to space aboard the Challenger
e. studied physics in co11ege and graduate school
| A．e-a-b-c-d | B．a-d-b-c-e | C．e-a-d-b-c | D．e-a-b-d-c |
The passage is most probably taken out of _________________ .
| A．a novel | B．a report | C．a diary | D．an essay |
Dickens & London Exhibition
Date: 9 December, 2011---10 June, 2012
Location: Museum of London
Celebrate the 200th anniversary of the birth of Charles Dickens in the first major UK exhibition for his Over 40 years.
By recreating the atmosphere of Victorian London through sound and projections. You’ll be taken on an unforgettable journe y to discover the city that inspired his writings.
Paintings, photograghs, costumes and objects will illustrate different themes that Dickens wrote into his works, while rarely seen manuscripts(手稿) including Bleak House and David Copperfield ---written
in the author’s own hand ---will offer clues to his creative genius.
During your visit you’ll discover how Dickens’ childhood experiences of London were introduced into the stories he wrote. The great social questions of the19th century will also be examined, all of which set the scene for Dickens’ greatest works.
Highlights of the exhibition will inc1ude an exciting audio-visual experience bringing to life the desk and chair where Dickens worked on his nove1s, and a special film shot by one of the UK’s leading documentary filmmakers.
Packages include afternoon entry (1:00 pm ---4:00 pm) to the exhibition plus overnight accommodation at a nearby hotel. If you wish to visit the exhibition the day after your hotel stay, p1ease call our reservation department. Call: 08712212717.
Book a trip online with us, with tickets to Dickens & London Exhibition ---afternoon entry and hotel accommodation included in the price. All taxes included. No credit card fees. No booking fees. No discount.
Price Information: a package costs an adult ￡180 and a child ￡90 ( 4---15 ) ; an afternoon entry costs an adult ￡28 and a child ￡14 ( 4---15 ).During the visit, visitors can ___________________
| A．read three Dickens’manuscripts, |
| B．experience a vivid picture of Victorian London |
| C．find the great social problems in London at present |
| D．sit at the desk where Dickens worked hard on his novels |
What do we know about Dickens in this passage?
| A．He used to be a filmmaker . |
| B．He lived a hard life in his childhood. |
| C．He wrote different themes into his works. |
| D．He wrote social violence into his books. |
If we book a trip online, we have the following benefits EXCEPT that ___________ .
| A．we can book it free of charge |
| B．we will pay none of the taxes |
| C．we will pay none of credit card fees |
| D．we will be given a discount |
How much should a couple with one child at 10 and another at 18 pay if they have a package ?
| A．￡360 | B．￡540 | C．￡630 | D．￡720 |