1 . Each year, the discovery of new shark species underlines how little we know about ocean biodiversity. In a recent report conducted by Sibert and Rubin, they reported an unexpected finding: a large-scale extinction of sharks in the pelagic ocean, the largest ecosystem on Earth, about 19 million years ago. Their discovery suggests that some extinctions in the open sea of the past may have been mysterious.

The study of Sibert and Rubin takes advantage of a system by using tiny, hard bits of shark skin and bony fish teeth that naturally fall from their bodies to the seafloor. These extremely small fossils provide a rich record of ancient oceanic sharks and their abundance for thousands of years. By studying fossils from many regions, the diversity patterns can give major insights into evolution (进化) of the open sea that would be otherwise unknown.

Sibert and Rubin quantified(量化)a past extinction of sharks, reporting a 90% decline in number and >70% drop in diversity. They found that nearer-shore sharks appear to survive, but migratory ones go extinct. The finding of this study is that sharks had undergone a widespread extinction that reorganized their communities from 16 million to 20 million years ago.

Sibert and Rubin narrowed the disappearance of sharks to a window of time under 100,000 years around 19 million years ago, but the causes of this event remain unclear. Because this time period does not stand out as a period of major climatic change, the authors do not attribute(归因于) environmental factors as an extinction driver. As for other causes, the loss of shark diversity is directly linked to overfishing.

The loss of sharks from the oceans has profound, complex, and unavoidable ecological consequences because their presence reflects the stability of marine ecosystems. Yet, one-quarter of the global diversity of sharks is currently threatened with extinction. Despite recent improvements in conservation actions, shark communities never recovered from a mysterious extinction event 19 million years ago; the ecological fate of what remains is now in our hands.

1. What did Sibert and Rubin find?

A．The negative impact of the extinction of sharks.

B．The mysterious reasons behind the disappearance of sharks.

C．The most recent advances in the study of the largest ecosystem.

D．The large-scale decline in the number of sharks about 19 million years ago.

2. How did Sibert and Rubin conduct their study?

A．By collecting and analyzing shark fossils worldwide.

B．By quantifying the movement of near-shore sharks.

C．By using a system to study the naturally fallen bits from sharks.

D．By keeping track of ancient oceanic sharks and their activities.

3. According to the passage, which of the following statement is true?

A．Overfishing is partly to blame for the loss of shark diversity.

B．The number of sharks has recovered to its previous level.

C．Scientist have figured out the exact causes of sharks’ extinction.

D．Sharks had undergone a widespread extinction due to the climate change.

4. Which of the following is the best title for the text?

A．Sharks: The Stories behind Them	B．Sharks: The Marine Masters
C．Sharks: Killers or Misunderstood?	D．Sharks: The Mysterious Extinction

2 . Working for a big company in London on a salary (薪水)of over £100,000, you might expect Grayden Reece-Smith to have a luxurious (奢侈)lifestyle, going on expensive holidays or driving a sports car around south London, where he lives. In fact, the 28-year-old lives a very different existence from his colleagues. He gives away everything he earns over £42,000–a figure that he thought he could comfortably live on.

Over the past five years, Reece-Smith has handed over more than £250,000 to organizations such as International Care Ministries, which helps poor families in the Philippines, and the Against Malaria Foundation. He is part of a growing number of young professionals described as “effective altruists”. Effective altruists typically donate regularly to a charity which they think will have a great impact (影响). Some change careers to make more money, which can then be given away.

Reece-Smith considered working in the charity sector after graduating from university, but thought that he could make a bigger difference by donating a large part of his salary. He had volunteered as a teacher at a school in Tanzania, but then realized that earning and giving would be more effective. “The cost of my flights there could have paid the salaries of two teachers for an entire year,” he says. Instead, he could “stay at home, living a nice life and still make a huge difference in the world”.

He is not mean with money-last year he went to Cuba on holiday, and spent several thousand pounds on a new sofa. But his lifestyle isn’t as luxurious as some of the people he works with. “I usually don’t buy supermarket-branded food products, but I don’t own a car. Other people on my salary might have a bigger house. Some of my colleagues have four-bedroom houses, but we only bought what we needed-a two-bedroom flat.£42,000 is more than enough to live on and still save,” he says.

1. How much money does Grayden spend on donation every year?

A．Less than £42,000.	B．Over £100.000.
C．£50,000.	D．Any income over £42,000.

2. What may an “effective altruist” do according to the text?

A．Donate to impactful charities.	B．Make more money to enjoy lives.
C．Create a good public image.	D．Enter a teaching profession.

3. Why did Grayden decide to donate money but not work in the charity sector?

A．To access his inner life.	B．To create a stronger effect.
C．To give away all of his salary.	D．To be a teacher at a school.

4. What can be inferred about Grayden from the text?

A．He leads an expensive lifestyle.	B．He buys food produced by supermarkets.
C．He lives in a four-bedroom house.	D．He balances his life and donation.

3 . With such a wide range of platforms and devices available to the everyday reader, the physical book, while not yet extinct, may end up going that way. Why?     1    .

With a rapid increase in digital reading platforms, reading is no longer a common problem for bookworms.     2     They’re designed to simplify the process of reading on the go. You can select a book, track your progress, and even submit reviews. With no need to carry around physical books, readers are much more likely to pick up where they left off whenever and wherever they may be.

Readers can also carry around their favourite books within an e-reader. Common examples include the Amazon Kindle, Onyx Boox, and PocketBook. These hand-held devices offer fantastic portability, readability and variety.     3     They are much smaller and lighter than physical books, making them an ideal option for those always on the go.

Social media has had a great effect on our reading habits. It governs our daily life. With physical books no longer a key form of entertainment for children, it has been replaced with digital alternatives. Social media and video games have replaced the ways in which we traditionally read and tell stories.     4    .

As is known to us all, technology has changed the ways in which we read at home as well as in the classroom.     5     Exposure to the digital potential of reading is introduced at an early age. Virtual learning platforms have also exploded in popularity in recent years. Technology in the classroom is no longer a luxury but a necessity to keep up with the modern age.

A．There are a number of apps out there.

B．Books and lessons are delivered online.

C．We are still reading but just in a different way.

D．Lots of people find it difficult to fit reading into their daily routine.

E．Some e-readers also allow users to access the Internet for various purposes.

F．There’s nothing worse than realizing you have forgotten your favourite book.

G．Here are some ways technology has transformed our reading habits in recent years.

4 . For even the most city citizens, a quick escape into nature is always a welcome breath of fresh air. Try looking for an urban garden nearby — they often hide themselves just around the corner. Click here to know more of the coolest gardens in cities around the world.

Sky Garden

As London’s highest public garden, this social space offers splendid 360-degree views of the city. With a restaurant, observation decks and beautiful plant life, there is something for everyone in this city-center escape from urban life.

The BeltLine

In a massive, 22-mile loop (环线) around the city, the BeltLine connects many Atlanta neighborhoods with parks, trails, restaurants and art shows. Although it is still under construction, the sections that are open to the public act as alternative space to enjoy the outdoors.

Jardins de Rubió i Lluch

This walled, shady garden is in the courtyard of the historic Hospital de la Santa Creu. Decorated with lilac and mandarin trees — and string lights in the evenings — this small garden square is the perfect place to sip a coffee away from Barcelona’s crowded atmosphere.

Dumbarton Oaks

The garden at this historic estate in Georgetown was listed as one of the 10 best gardens in the world by National Geographic in 2014. It has both a formal, carefully manicured (修剪整齐的) garden as well as a naturalistic garden — allowing visitors the ability to choose what they want to see.

1. Where is the passage taken from?

A．A magazine.

B．A website.

C．A newspaper.

D．A book.

2. Which garden best suits people who enjoy overlooking the city?

A．Sky Garden.	B．The BeltLine.
C．Jardins de Rubió i Lluch.	D．Dumbarton Oaks.

3. What do the four gardens have in common?

A．They are all mixtures of entertainment and art.

B．They are all mixtures of urban and rural gardens.

C．They are all good places for people to get close to nature.

D．They are all quiet places for people to enjoy a relaxed dinner.

5 . Tom Sawyer Play Is an Adventure

A 35-minute hand-clapping, foot-stomping musical version of a Mark Twain favorite returns with this Tall Stacks festival.

“Tom Sawyer: A River Adventure” has all the good stuff, including the fence painting, the graveyard, the island and the cave. It is adapted by Joe McDonough, with music by David Kisor. That’s the local stage writing team that creates many of the Children’s Theatre of Cincinnati’s original musicals, along with the holiday family musicals at Ensemble Theatre.

This year Nathan Turner of Burlington is Tom Sawyer, and Robbie McMath of Fort Mitchell is Huck Finn.

Tumer, a 10th-grader at School for Creative and Performing Arts, is a familiar presence on Cincinnati’s stages. He is a star act or of Children’s Theatre, having played leading roles in “The Legend of Sleepy Hollow” and “The Wizard of Oz,” and is fresh from Jersey Production “Ragtime”.

McMath is a junior at Beechwood High School. He was in the cast of “Tom Sawyer” when it was first performed and is a Children’s Theatre regular, with five shows to his credit. This summer he attended Kentucky’s Governor’s School for the Arts in Musical Theatre.

Note to teachers: Children’s Theatre has a study guide demonstrating how math and science can be taught through “Tom Sawyer.” For downloadable lessons, visit the official website of Children’s Theatre.

1. Who wrote the music for “Tom Sawyer: A River Adventure”?

A．David Kisor.	B．Joe McDonough.
C．Nathan Turner.	D．Robbie McMath.

2. What can we learn about the two actors?

A．They study in the same school.	B．They worked together in ”Ragtime“.
C．They are experienced on stage.	D．They became friends ten years ago.

3. What does Children’s Theatre provide for teachers?

A．Research funding.	B．Training opportunities.
C．Technical support.	D．Educational resources.

8 . This is the time of year when many gardeners are harvesting tomatoes. Gardening expert Jessica Damiano recently reported about the many pictures of strangely shaped tomatoes sent to her from fans of her gardening advice.     1    . The good news, Damiano said, is that there is nothing wrong with the strangely shaped fruits.     2    . Their unusual appearance does not affect their taste or nutritional value.

    3     If you have ever cut open a tomato, you know they are divided into internal (内部的) parts, called locules (小室). Most tomatoes have about four or five locules; other kinds of the fruit, like cherry tomatoes, contain two or three. But when a plant experiences extreme (极端的) temperature, cell division in the developing fruit can go off track. Temperatures over 32℃ during the day and 27℃ overnight can lead the tomato to form an extra locule. But there is not enough room inside a tomato for the extra part, so it grows on the outside of the fruit.

Not every tomato on an affected plant will be deformed (改变形状), however. What are the possibilities? Under the right conditions (temperatures that are too hot or even too cold), this could affect one or two tomatoes per plant, depending on where they are in the development process and what the (weather) conditions are, said Timothy McDermott, a professor at Ohio State University. The possibility of one of your tomatoes developing a locule oddity (怪异) is about one in a thousand, McDermott said.     4     But, Damiano noted, heirloom (原种) kinds seem more likely to have this genetic mutation (基因变异) than hybrids.

And, when harvesting your crop, remember:     5    

A．select the good-looking ones.

B．Any tomato can grow an extra locule.

C．the funny-looking tomatoes taste just as good!

D．What causes the unusual appearance of tomatoes?

E．Unless otherwise diseased, they are perfectly good for eating.

F．She said people sometimes question if the tomatoes are okay to eat.

G．Provide shade for your plants when temperatures are predicted to remain above 32℃.