There’s nothing more annoying than settling down to sleep and hearing the sound of a mosquito buzzing around you.
The only thought most of us ever give to this noise is “I need to get rid of this insect, immediately”, but it turns out that the mosquito is actually quite a(n)
A team of scientists from Oxford University in the UK, in
By placing eight cameras inside a tiny film studio, the scientists could study several mosquitoes up close. The high-tech cameras filmed the insects at 1,000 frames per second, meaning the scientists were able to study the insects’
“Recording mosquitoes during free-flight represented a huge technical challenge due to their small size,
Published in the journal Nature, the study found that mosquitoes flap their wings around 800 times a second. As a
Richard Bomphrey of the Royal Veterinary College, the study’s leader, believes that mosquitoes have a unique flying method that sets them apart from other flying insects.
“We predicted that they must make use of clever tricks, as the wings
Hopefully, the discovery of the mosquito’s special abilities will be of benefit to engineers in the future. The findings could lead to better aircraft, or even improvement to tools like lenses or pumps.
But the scientists hope their study can one day be
“The more we know about mosquitoes, the better our chance of understanding their flight behavior, how they carry disease and
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| A. authorities B. conflicts C. increasingly D. infected E. invisibly F. oddly G. outbreaks H. present I. subjected J. suspected K. unexpected |
Deadly virus approaches tigers
India’s most important tiger conservation body is to investigate growing concern that Asia’s wild tigers are
The National Tiger Conservation Authority is to fun d a study of Canine Distemper Virus(CDV) in six of the most important areas for the species, which could confirm a problem that a few experts have
There have been
CDV may also exist in the tiger population in Sumatra, where animals have been reported to be behaving
Dr John Lewis of the British charity Wildlife Vets International is helping the Sumatran
Lewis also believes that the way CDV changes tigers’ behavior could be a factor where tiger- human
Perhaps we should not be surprised that tigers are
But as Miquelle told BBC Wildlife, “Very few people were aware of the potential threat, let alone looking for it, even if it is
| A. force B. ideal C. blossoms D. importing E. floating F. cultivation G. dried H. floated I. unlikely J. consume K. absorb |
Visitors to the New Orleans Cotton Exposition of 1884 saw a new tropical plant that had been brought from Venezuela. The new plant
Some exposition visitors obtained cuttings of the plant to take home with them because they wanted the beautiful, pale-violet flowers
Water hyacinths grow very quickly, covering the surface of a stream from bank to bank. One plant can produce 1,000 more plants in less than two months. The plants often form a tangled mass so thick that a boat can't
In the United States, a great deal of money has been spent on projects designed to control water hyacinths. Poisons will kill the plants and dredges can scoop them out of the water, but they soon reappear. Some scientists have suggested establishing the manatee, or sea cow, in the affected regions. The manatee is a large aquatic mammal that can
But since the manatees are endangered, it is
Today, people try to be more careful about
| A. experiencing B.loss C. respond D. pressing E. determine F. classify G. senses H. strictly I. processing J. distinguish K.upset |
There’s no doubt that dogs are incredibly perceptive and sensitive beings, with the ability to sense emotions and read the facial expressions of humans. The American Kennel Club (AKC) says previous studies have shown dogs combine hearing and sight to
Researchers have found that dogs can
A 2016 study published in The Royal Society’s Biology Letters showed dogs can recognize emotions in humans using information from different
Speaking to Newsweek, the AKC’s chief veterinary officer, Dr. Jerry Klein, explained dogs can certainly become depressed and anxious. There have been reports of dogs
“But whether or not dogs get ‘sad’ is a little less certain,” Klein told Newsweek. Klein said from a
| A. potential B. accesses C. touching D. promotes E. easily F. means G. presents H. responsible I. standing J. exposure K. given |
Why is Art so Powerful?
Perhaps the simplest answer to this question is that art touches us emotionally.
Art is powerful because it can potentially influence our culture, politics, and even the economy. When we see a powerful work of art, you feel it
It has the power to educate people about almost anything. It creates awareness and
It breaks cultural, social, and economic barriers. While art hardly really solves poverty or
It
The truth is that people have recognized how powerful art can be. Many times in history have we heard of people being criticized, threatened, censored, and even killed because of their artwork. Those
| A. appear B. faded C. immediately D. ordinary E. overlooked F. pairings G. progressively H. signals I. translate J. underwent K. unexpected |
Mixing senses: synaesthesia taught to adults
Brain training for synaesthesia — where you mix up sensory information — may be just around the corner. People have been taught to experience a form of synaesthesia where letters
By the end of the nine-week course, most of the volunteers were seeing text in the real world take on particular colours, on road signs, for example. “The colour
Synaesthesia is thought to result from people’s brains developing in such a way that their sensory
Two years ago researchers made some aspects of the condition by getting people to read books where some of the letters were printed in certain colours. This improved their scores on tests but didn’t
What if people
The training had a(n)
| A. participants B. missing C. remotely D. doubtful E. conducted F. rush G. tolerated H. particularly I. reflects J. efficient K. monitors |
Digital technology — email and smart phones especially — have vastly improved workers' ability to be productive outside of a traditional office. Even so, most white-collar work still happens in an office. One reason is that, according to findings of a new survey of office workers
Suspicious bosses will likely have their doubts reinforced (加深) by the same survey, which shows that 43 percent of workers say they've watched TV or a movie while “working” remotely, while 35 percent have done housework, and 28 percent have cooked dinner. If people find no one
It is true, however，that working at home makes people much more
The fact that such practices remain officially unaccepted
More broadly the Wakefield survey suggests that employers may be
