It is breakfast time. Just when you reach for the delicious piece of fruit on your counter, you see something that makes you much less hungry: a swarm of fruit flies!
Fruit flies are tiny insects that are attracted by ripe or rotting fruits and vegetables. The flies not only eat the fruit, but also lay their eggs there.
If all goes according to plan, the flies will enter the trap through the holes.
| A．They are so disgusting. |
| B．It will catch all of the remaining fruit flies. |
| C．So how did these fruit flies end up in your kitchen? |
| D．A small fruit fly problem can become serious very quickly. |
| E．The first step is to remove all fruits or vegetables from your counter. |
| F．This will kill the flies but spread harmful poison all over your kitchen. |
| G．You can also make a trap to catch the remaining fruit flies in your house. |
相似题推荐
【推荐1】How do companies decide who to send overseas?
But times are changing. More and more overseas assignments are failing. The reason? Lack of intercultural competence. Companies have discovered that finding the right person for the job is much more than simply identifying the person who could have done the job if it had been in their home country.
So how do companies judge if someone has the right competence for a job in another country?
So what else can a company do to make sure that a person is right for an overseas assignment?
| A．Working with other cultures is not for everyone. |
| B．One way is training, and many companies now invest substantial amounts of money to prepare people to cope with living and working in another culture. |
| C．It used to be so easy. |
| D．The ideal person for an overseas assignment has to be delegated when necessary. |
| E．One way is to try and find out how aware they are of other cultures. |
| F．They need to be able to accept other ways of doing things. |
【推荐2】How to Help Teens Find Their Purpose
As adults, we understand that finding purpose in life may not be a simple, straightforward process. Be patient with teens as they walk this journey of discovering their purpose.
Ask “why” questions. Psychologists suggest that helping our teens find purpose begins with asking “why” questions of them. These open-ended questions can help them explore their feelings and beliefs about different experiences.
Uncover their interests. As parents, most of us probably have a good sense of our children’s interests.
Allow for trying and failing. Of course, we don’t like to see our teens not succeed at something they try.
| A．Find positive role models. |
| B．Encourage your teen to ask questions. |
| C．We can also use technology to help teens in finding purpose. |
| D．As parents, we can serve as helpful guides along with the path. |
| E．Maybe they love baseball or video games or hanging out with friends. |
| F．They can also open the door to them learning more deeply about themselves. |
| G．However, sometimes failure can teach them a great deal about their interests. |
【推荐3】Learning how to be a better public speaker starts with taking responsibility for your own presentation. You have to learn to control your mind and the words that you are using in your speech.
To start improving your public speaking skills, begin by writing down your goals.
Always think in terms of how the customers want to use the product or service, and why. Do they want it for special occasions（场合）?
In addition to reading, you can learn how to be a better public speaker by developing your skills in writing. Learning from a private English teacher, found at https://www.tutorcity.sg/english-tuition, you can increase your knowledge in vocabulary and grammar.
| A．Does this work |
| B．Or do they want it for everyday use |
| C．Getting prepared will help you with this |
| D．First impression is also very important |
| E．You will also need to practice your speech more |
| F．Another thing you can do to improve your public speaking skills is reading |
| G．This way, you know what you need to work on to be a better public speaker |
【推荐1】When you praise a dog, it’s listening to not just the words you say but also how you say them. That might not be huge news to dog owners. But now researchers have explored this phenomenon by using an imaging machine to look inside the brains of 13 dogs as they listened to their owners’ voice.
The reward pathway in the dogs’ brains lit up when they heard both praising words and an approving intonation (语调)—but not when they heard random (随机的) words spoken in a praising tone or praising words spoken in a flat tone, according to the researchers.
“Dogs deal with both what we say and how we say it in a way which is amazingly similar to how humans do it,” says Attila Andics, a neuroscientist in Hungary. When dogs hear speech, he explains, they seem to separate the meaning of words from the intonation. Then the left hemisphere (半球) of the brain deals with meaning, while intonation is dealt with in the right hemisphere.
All the dogs in the study were willing volunteers and were trained not to move in the scanner (扫描器). The dogs could get up and leave the machine whenever they wanted. But it was clear to the dogs that their human companions loved it when they did this very easy task. “They were really happy to take part,” says Andics. “The difficulty of the training was that they can’t move more than 3 millimeters in any direction, otherwise we will have to throw out all of the data.”
He says most dog owners have experimented with trying to “trick” their dogs by saying nonsense words in a cheerful, happy tone of voice. “I think the big difference here is that they only heard us, and they didn’t see us,” says Andics, because the dogs were inside the machine. “Here, the only information they had was the speech signal. What we saw is that for praise to be dealt with as a reward, when there is no other supporting information, both word meaning and intonation have to fit.”
1. What is regarded as a reward by dogs according to the study?| A．Praising words in a flat tone. | B．Random words in a flat tone. |
| C．Praising words in a praising tone. | D．Random words in a praising tone. |
| A．Focus more on the meaning. | B．Focus more on the intonation. |
| C．Use information from their peers. | D．Use the two parts of the brain. |
| A．Looking into the dogs’ brain activity. |
| B．Training dogs to stay still in the machine. |
| C．Keeping dogs separated from their owners. |
| D．Asking dogs to get up and leave the scanner. |
| A．Dogs Understand Tone and Meaning of Words |
| B．Dogs Indeed Know How to Praise |
| C．Dogs Can Recognize Owners’ Voices |
| D．Dogs Can Read Man’s Moods |
【推荐2】Almost all animals need to sleep to stay healthy. But sleeping can also be dangerous because other animals may hurt those who are sleeping. This leads to many different ways of sleeping that help them stay safe. Some of these ways may surprise you!
Almost all bats sleep upside down. They hang from a branch of a tree or the ceiling of a cave. Up high, bats are safe from most other animals. If they are in danger, they just fly away.
A dolphin sleeps with just half its brain at a time. It must stay awake to breathe and to watch for danger. Dolphin mothers and babies can go without sleep for as long as two months to stay safe.
Some ducks sleep with just half their brains, too. These ducks often sleep in a line. The ducks at both ends help to keep the group safe. They keep one eye open to watch for danger. The ducks in the middle sleep deeply with both eyes closed.
Seals breathe air, but that doesn't stop some of them from sleeping underwater. They hold their breath and dive deep to sleep for up to twenty minutes at a time. Sleeping deep underwater helps these seals stay safe from animals that hunt them near the surface.
Horses often sleep standing up. Their legs lock in place so they don't fall over. If a horse is lying down, it needs a long time to get up. A horse can run from danger more quickly if it is already standing.
A flamingo (火烈鸟) can sleep while standing on one leg. The standing leg locks so it stays straight. The other leg remains close to the flamingo's body. Its head rests on its back. A flamingo lives (and sleeps) near many other birds to stay safe.
Some seabirds can sleep while they fly. These large birds spend most of their lives over the ocean. They are in danger on the water, but they are safe in the air. They fly for many hours without flapping (拍打) their wings. Sometimes they sleep while they are flying.
Would you like to sleep how they sleep?
1. The animals that sleep with half their brains are ___________.| A．ducks and seals | B．dolphins and ducks | C．bats and dolphins | D．flamingos and seabirds |
| A．To run from danger quickly. | B．To avoid falling over. |
| C．To help them to seep deeply. | D．To shorten the time to go to sleep. |
| A．offer to help | B．come to teach | C．refuse to protect | D．want to kill |
| A．How Animals Sleep | B．Sleep To Stay Healthy |
| C．Sleep As Animals Do | D．What Sleeping Animals Are Like |
【推荐3】Are you interested in science? How do you think scientists usually make new discoveries? The world produces millions of Ions of plastic wastes every year. What do you think the best way to deal with plastic pollution is? Why?
Caterpillars(毛虫)are often used as food for fishing. However, they are now set to join the war on plastic wastes.
Federical Bertocchini is a scientist with the Spanish National Research Council. When she's not working in her lab, Bertocchini keeps bees. One day, when she looked at her beehives(蜂箱),she found lots of caterpillars which were called waxworms(蜡虫). They are often used to feed fish. In the wild, however, they live in beehives, feeding on the wax that bees use to build their houses. Bertocchini picked out the caterpillars and put them in a plastic bag. Surprisingly, when she returned to the bag after cleaning out the hives, she found it full of holes. The worms had eaten their way out.
Bertocchini doesn't study plastic. However, you can't keep a good scientist away from an interesting question: Were the waxworms digesting the plastic?
Bertocchini got in touch with Paolo Bombeli and Christopher Howe at the university of Cambridge. According to their paper, some chemicals within the insects can really break down plastic.
Other scientists have also discovered plastic-eating species. In 2016, for example, a Japanese team found a bacterium. The bacterium has to spend more than six months eating a layer of plastic bag. However, Bertocchini and her partners discovered that it took a waxworm about 12 hours to eat a layer of plastic bag.
But the scientists reminded that it would be at least several years before they set free waxworms into the environment. They want to know if the waxworms are using the plastic as a food, or just they want to run away. If they just want to run away they are going to get fed very soon. But if they want to eat it as food, it's a completely different game.
"It's certainly not going to be the case that within six months we've solved the world's plastic problem, said Howe. "I wouldn't want people to think that within a few months, they can start throwing away plastic bags without worrying about it. "
1. We can learn from the passage that Federical Bertocchini __________________.| A．works full time as a bee-keeper |
| B．is a scientist who is studying on bees |
| C．found waxworms' unusual abilities by accident |
| D．mainly works on solving the world's plastic problem |
| A．It eats fish for food. |
| B．It can eat all kinds of bacterium. |
| C．It eats wax that bees no longer use. |
| D．It eats plastic much more quickly than the bacterium. |
| A．They want to run way. | B．They eat them as food. |
| C．They just want to taste the smell of them. | D．Scientists are still not sure about it. |
| A．there is still a long way to solve the plastic problem |
| B．waxworms can play no role in solving the plastic problem |
| C．we can solve the world's plastic problem within six months |
| D．it's a good idea to set free waxworms into the environment |
