South Koreans have enjoyed their first close-up look of new baby giant pandas at a name-revealing ceremony that is also
What to name the twin sisters was widely discussed among netizens after they were born on July 7 in theme park Everland. The names were
The baby pandas,
Everland said it would monitor the twins’ health
2 . Scientists have been experimenting with playing sounds to plants since at least the 1960s, during which time they have been exposed to everything from Beethoven to Michael Jackson. Over the years, evidence that this sort of thing can have an effect has been growing. One paper, published in 2018, claimed that an Asian shrub known as the telegraph plant grew substantially larger leaves when exposed to 56 days of Buddhist music — but not if it was exposed to Western pop music or silence. Another, published last year, found that marigolds and sage plants exposed to the noise of traffic from a busy motorway suffered growth difficulty.
Plants have been evolving (进化) alongside the insects that eat them for hundreds of millions of years. With that in mind, Heidi Appel, a botanist now at the University of Houston, and Reginald Cocroft, a biologist at the University of Missouri, wondered if plants might be sensitive to the sounds made by the animals with which they most often interact. They recorded the vibrations made by certain species of caterpillars (毛毛虫) as they chewed on leaves. These vibrations are not powerful enough to produce sound waves in the air. But they are able to travel across leaves and branches, and even to neighbouring plants if their leaves touch.
They then exposed tobacco plant — the plant biologist’s version of the laboratory mouse — to the recorded vibrations while no caterpillars were actually present. Later, they put real caterpillars on the plants to see if exposure had led them to prepare for an insect attack. The results were striking. Leaves that had been exposed had significantly higher levels of defensive chemicals, making them much harder for the caterpillars to eat. Leaves that had not been exposed to vibrations showed no such response. Other sorts of vibration — caused by the wind, for instance, or other insects that do not eat leaves — had no effect.
“Now speakers with the right audio files are more often being used to warn crops to act when insects are detected but not yet widespread,” says Dr. Cocroft. “Unlike chemical pesticides, sound waves leave no dangerous chemicals.”
1. What can we learn about plants from the first paragraph?A.They may enjoy Western music. | B.They can’t stand Buddhist music. |
C.They can react to different sounds. | D.They can make different sounds. |
A.Plants can make a cry for help. | B.Plants evolve alongside insects. |
C.Plants are sensitive to the sounds. | D.Plants have been studied for years. |
A.They can recongnize harmful vibrations. | B.They look like laboratory mice. |
C.They can threaten the caterpillars. | D.They can release poisonous chemicals. |
A.Disadvantages of chemical pesticides. | B.Application of the experimental results. |
C.Interaction between plants and insects. | D.Warning system of widespread insects. |
3 . New research from the University of Portsmouth has shown a marked increase in shipping in the North East Atlantic. Scientists now warn that more monitoring is required to help protect sea life.
Researchers at the University of Ponsmouth have discovered that rates (率) of shipping in the North East Atlantic area rose by 34 per cent in a five-year period. The research is the first detailed survey of shipping activity in the North East Atlantic. Researchers used data from over 530 million vessel (船) positions recorded by Automatic Identification System(AIS). They looked at the change in shipping between 2013 and 2017 across ten different vessel types. In total the study area covered 1.1 million km², including waters off Belgium, Denmark, France, Germany,Iceland, Ireland, The Netherlands, Norway, Portugal. Spain, and the UK.
Lead author, James Robbins said: “This change is likely to put more pressure on the marine (海洋的) environment, and may influence the protection of at-risk species. Renewed monitoring effort is needed to make sure that protective measures are enough to save species under threat in a changing environment.”
Some of the greatest shipping increases were found in areas close to the Spanish coast. The Espacio Marino de la Costa da Morte saw a rise of 413 percent in vessel activity. It is an area used to protect seabirds.
Dr. Sarah Marley, Visiting Researcher at the University of Portsmouth, said: “Shipping is the most widespread human activity in our oceans, carrying a set of threats-from unnoticeable effects like underwater noise pollution to serious results when ships hit whales.”
Professor Alex Ford. from the University’s Institute of Marine Sciences, said: “Given the well-documented effects that shipping can have on the marine environment, it is necessary that this situation continues to be monitored-particularly in areas used to protect vulnerable (脆弱的) species which may already be under pressure.”
1. What can we say about the new research?A.It started in 2013. | B.It is the first of its kind. |
C.It was carried out by AIS. | D.It covers the whole Atlantic. |
A.Rapid population growth. |
B.Rising global temperatures. |
C.The huge increase in shipping. |
D.The disappearance of marine life. |
A.Shipping plays an important role in the local economy. |
B.Shipping can be a danger to the marine environment. |
C.Noise pollution is closely related to human activity. |
D.Marine areas should be monitored more carefully. |
A.New waterways across the Atlantic |
B.The shipping industry in the North East Atlantic |
C.New research opens windows into life under the water |
D.Sea life needs better protection from an increase in shipping |
4 . Frosty Ridge Resort (FRR) is a popular tourist attraction with a long history. Do you want to join the proud tradition of service at FRR? Welcome to join us!
Parking Host
The responsibility of a parking host is to help guests properly park their vehicles (交通工具), informing guests of parking steps and answering questions. You must be at least 18 years of age. A driver’s license (执照) is required. It’s necessary to have a team player attitude and be able to work with people of diverse cultures. The ability to work with different groups of people in a calm and professional manner is also a must.
Child Care Provider
Previous child care experience is preferred. You should provide quality child care, by meeting the needs of various age groups and guest demands in a positive way. Show positive communication skills, and offer children funny activities. Climb stairs to work space and work at a desk or computer work station for one or two hours.
Ski InstructorTeach ski lessons to guests with the specific focus on students’ goals while emphasizing (强调) safety, fun and learning. You should be able to ski or snowboard. Great customer service skills and good adaptability are required. In particular, unlike the two positions above, you must work during the Christmas week.
1. What should people in the parking host position do?A.Teach ski lessons to guests. |
B.Help guests park their cars. |
C.Look after guests’ children. |
D.Answer questions from FRR director. |
A.Being communicative. | B.Providing fun for guests. |
C.Working during Christmas week. | D.Having related working experience. |
A.Job hunters. | B.Project managers. | C.Local visitors. | D.College students. |
1. How does the man feel about flying?
A.Excited. | B.Bored. | C.Scared. |
A.The man. | B.The woman. | C.Neither of the speakers. |
A.It’s unpleasant and inconvenient. |
B.It’s great to see the scenery. |
C.It’s exciting to meet other passengers. |
A.The plane. | B.The train. | C.The car. |
1. What was the speaker’s feeling this morning?
A.Excited. | B.Tired. | C.Nervous. |
A.At 8:00. | B.At 8:30. | C.At 9:10. |
A.The result of her competition. |
B.Other swimmers’ behaviors. |
C.The judge’s instructions. |
A.47 points. | B.50 points. | C.53 points. |
When she was just three years old, Alyssa Carson from the USA took an interest
Alyssa’s goal is to help others understand the potential for human life in outer space. She also wants to be one of the first humans
She is studying astrobiology (天体生物学) at the Florida Institute of Technology. It is
Alyssa is a(n)
8 . How I Study English
I often hear some students say English is difficult, and it gives them a headache. So they can’t learn it well. But English is very easy for me. I’m good at it. I’m very glad to tell you something about how I study English.
First, I think an interest(爱好) in English is very important. When I was in Grade One, we had a new subject—English. It was fresh for me. I was interested in it, so I worked hard at it. Soon we had an English exam and I got a very good mark. How happy I was! After that, I learned English harder and harder. Our English teacher often teaches us English songs, the songs sound nice. I often think how interesting English is!
Second, I think English is a foreign language. I should learn it well in the following ways: Listen to the teacher carefully, speak bravely, read aloud and have a good vocabulary(词汇). Then practice again and again, never be tired. And I also have a good habit: Asking whenever(不论何时) I have a question, I must make it clear by asking our English teacher. How happy I am when I understand!
Besides this, I often read English stories, jokes and easy novels. From these I know English is not only interesting, but also useful. They help me understand a lot of things. So to do more reading is an important way to learn English well.
And I also do some exercises from our class magazines, and I often write English diaries. English has become a close friend of mine.
Now I have learned English for more than two years. I always keep the first position in our school. From these words, I hope every student can learn English well.
1. Why do some students often “have a headache”?A.Because they are easy to catch cold. | B.Because it’s often very cold. |
C.Because they think English is easy. | D.Because they don’t think English is easy. |
A.bored | B.interested |
C.surprised | D.strict |
A.I got a good way |
B.I had a good idea |
C.I did badly in the exam |
D.I did well in the exam |
A.English is full of stories |
B.English is full of jokes |
C.his teacher often teaches them nice English songs |
D.of nothing |
China is a big country with many dialects. However, in recent years, the preservation of Chinese dialects
Chinese dialects represent a
Chinese dialects carry
In the digital age, using technology can aid in the preservation of dialects. Efforts should
Preserving Chinese dialects is not
10 . I knew that my first day of senior high school would be challenging. I was
On Monday I was
I knew this year was going to be a
A.careless | B.nervous | C.annoyed | D.amazed |
A.preparing | B.looking | C.asking | D.calling |
A.satisfied | B.disappointed | C.impressed | D.filled |
A.suitable | B.advanced | C.perfect | D.expert |
A.passed | B.missed | C.improved | D.arrived |
A.Chinese | B.math | C.PE | D.physics |
A.tiring | B.doubtful | C.unique | D.informal |
A.Stand | B.Leave | C.Sit | D.Play |
A.actually | B.secretly | C.officially | D.partly |
A.tested | B.cheated | C.admired | D.helped |
A.strange | B.dangerous | C.wonderful | D.bad |
A.job | B.change | C.plan | D.goal |
A.give up | B.concentrate on | C.believe in | D.carry out |
A.recommend | B.exchange | C.explore | D.support |
A.met | B.recognised | C.tracked | D.greeted |