1 . Last week, an owl named Flaco made a daring escape from his cage at New York’s Central Park Zoo when it was broken. This set off a bird-hunt led by local police and park rangers. The zoo officials were concerned about Flaco’s ability to survive in the wild, as he had been living in the cage for 13 years. They attempted to lure (引诱) him back with his favorite treats.
However, Flaco proved to be too clever to be caught so easily. He was spotted soaring above 5th Avenue and the skating rink in Central Park. His escape attracted the attention of many city dwellers and many New Yorkers flocked to the park to catch a glimpse of Flaco, taking photos with excitement.
But this week, zoo officials announced they accepted that Flaco remained in Central Park because they observed him bringing up bones and fur from the park’s community of rats. “He has been very successful at hunting and consuming lots of rats in the park.” zoo officials told the New York Post. “It’s truly remarkable. He’s hunting independently and his flying has improved. It appears that Flaco is quite content with his new life and enjoys his freedom outdoors.”
This incident serves as a reminder of the challenges faced by wildlife in urban environments. Owls, being nocturnal creatures, are active searching for food at night and rest during the day. Yet some residents who are unaware of proper bird-watching behavior reportedly see Flaco sleep in a tree during the day, and begin to make loud noise and shout at him. It interrupts his daytime naps. Flaco can’t try to say “shh, shh” with the traditional New York reply. After all, a bird can’t give someone the bird.
1. Why were the zoo officials worried about Flaco after his escape?A.He was hunted by local people. | B.He might attack human beings. |
C.He might be unable to exist in the wild. | D.He was injured and needed medical attention. |
A.He has adapted to the wild. | B.He still faces great challenges. |
C.He dislikes the rats in the park. | D.He has found his previous home. |
A.Scary-looking. | B.Shy and quiet. | C.Sleepy and lazy. | D.Active at night. |
A.The bad effect of local residents on Flaco’s sleep. |
B.The potential threat from other animals in the park. |
C.The difficulty Flaco faces in finding food in the city. |
D.The risk of Flaco getting injured while flying in the city. |
2 . A recent study conducted by the Massachusetts Institute of Technology (MIT) has discovered that river erosion (侵蚀) can lead to increased biodiversity in areas with minimal tectonic (地壳构造的) activity. The researchers focused their attention on the Tennessee River Basin and examined how the erosion of various rock types by the river had led to the separation and diversification of a type of fish called the greenfin darter. As time passed, these separate fish populations evolved into distinct families with genetic differences.
Scientist Thomas Near observed that the greenfin darter was exclusively found in the southern half of the Tennessee River Basin. The researchers analyzed the genes of each fish in Near’s data set and constructed an evolutionary tree. This tree helped them comprehend the evolution and differences of the greenfin darter species. They discovered that the fish within the same branch of the river were more closely related to each other than to the fish in other branches.
This study provides evidence that river erosion significantly impacts biodiversity in regions with low tectonic activity. It illustrates how changes in the landscape caused by river erosion can lead to the division and diversification of species over time, even in peaceful environments. These findings enhance our understanding of the mechanisms (机制) that drive biodiversity and evolution, even in areas that are not typically associated with intense tectonic activity.
Subsequently, the team discovered a strong correlation between the habitats of the greenfin darter and the type of rocks present. The southern half of the Tennessee River Basin consists of hard, tightly packed rocks, resulting in turbulent (湍急的) waves in the rivers that flow through it. This characteristic may be favored by the greenfin darter. As a result, the team assumed whether the distribution of greenfin darter habitats had been influenced by the changing rock types, as the rivers eroded the land over time. To test this assumption, the researchers developed a simulation model. Remarkably, the results confirmed their assumption.
1. What is new about the MIT study?A.It finds river erosion can enhance biodiversity. |
B.It further proves the mechanisms of river erosion. |
C.It proves the geographical features of biodiversity. |
D.It classifies a type of fish called the greenfin darter. |
A.Their appearances vary between families. | B.Their genetic constitutions have diversified. |
C.They prefer the deep and slow-flowing river. | D.They go extinct in the changing landscape of rivers. |
A.By creating an evolutionary tree of the fish. |
B.By offering the fish’s genetic data. |
C.By reasoning out the time the fish evolve and separate. |
D.By analyzing the genetic similarity between different fish. |
A.River Erosion Can Shape Fish Evolution | B.Genetic Change in the Greenfin Darter |
C.Evolutionary Tree Analysis of the Greenfin Darter | D.The Impact of Climate Change on Fish Diversity |
A.The importance of bees to agriculture. | B.The factors in causing the decline of bees. |
C.The reasons for choosing a day for bees. | D.The ways to increase the diversity of bees. |
A.The change in their food forms. | B.The disappearance of their homes. |
C.The loss of some plants. | D.The poor harvest in agriculture. |
A.Raising awareness of protecting bees. | B.Keeping more people away from bees. |
C.Inspiring more art works about bees. | D.Encouraging professors to keep bees. |
Among all the members in the cat family, the Siberian tiger is the largest in size. Also known as the Northeast Tiger in China, the Siberian tiger is one of the most
Recently, a wild Siberian tiger has been spotted in a forest area in Northeast China’s Heilongjiang province.
Cats are second only to dogs as the most common pets in the world.
A.A naturalist. | B.A zoo specialist. |
C.A TV reporter. | D.A nurse. |
A.They are gentle and shy. | B.They are long-armed man-eaters |
C.They are good at smile from ear to ear. | D.They are fierce animals. |
A.Many species in the world may die out. |
B.A good example can be followed to preserve wildlife. |
C.Women are encouraged to work for zoos. |
D.Our world is not safe today. |
7 . From May to October in the southeastern US, five species of turtles, from loggerheads to Kemp’s ridley, crawl (爬行) ashore under the cover of night to lay their eggs on the very beach they were born. During this time, thousands of turtle-loving volunteers comb the shorelines looking for the turtles’ tracks as part of an ongoing effort to gather population data and protect the nests.
However, it’s not easy to detect turtle eggs as female turtles frequently make “false crawls”, climbing out of the water but returning without laying eggs. And since sea turtles disturb huge areas of sand to hide their nests from predators (捕食者), human monitors are often left guessing where the eggs are.
Now, a new study suggests man’s best friend can do it better. A smell-detecting dog named Dory found the location of sea turtle eggs more accurately than human volunteers, according to a recent study led by Rebekah Lindborg, a conservationist with Disney’s Animals, Science, and Environment division.
Lindborg teamed up with Pepe Peruyero, a dog behaviorist who has trained smell-detecting dogs for over 20 years. Peruyero selected a rescue dog named Dory, a two-year-old terrier mix found wandering along a Florida highway, as the project’s poster dog.
Over months of training on a 50-by-50-square-foot artificial beach, Peruyero trained Dory to alert (警觉) at the smell of “cloacal mucus”, a sticky matter that coats a sea turtle’s freshly laid eggs, with Lindborg as her handler. Then, the team convinced the Florida Fish and Wildlife Conservation Commission to allow a friendly competition. During the peak nesting seasons, two groups went around a stretch of shoreline about five miles long in Vero Beach, Florida.
The terrier identified 560 sea turtle nests from three species, while people found only 256. Dory was also significantly better than people at choosing where to dig for eggs, greatly reducing the number of holes dug, Lindborg reports. And while human volunteers couldn’t find the eggs in 14.8% of nests, Dory only failed to deliver 5.7% of the time. “Dory has a keen nose for turtles, and this could be a game changer,” said Lindborg.
1. How do female turtles make egg detection more difficult?A.They make misleading tracks in the sand. |
B.They destroy their eggs deliberately. |
C.They put their eggs in the water. |
D.They build nests everywhere. |
A.The nature of digging. |
B.The sense of competition. |
C.The warning from its trainer. |
D.The matter on a turtle’s newly laid eggs. |
A.By giving examples. | B.By describing courses. |
C.By making comparisons. | D.By offering explanations. |
A.The kindness of a man who protects turtle nests. |
B.A dog that can find turtle nests successfully. |
C.The difficulty of building turtle nests. |
D.A new discovery about turtle nests |
1. How many cats does the woman want?
A.One. | B.Two. | C.Three |
A.Black | B.Gray. | C.White. |
1. Where do the most seals live?
A.In the oceans near the poles. | B.In the Atlantic Ocean. | C.In the Pacific Ocean. |
A.Most of the species moved to other places. |
B.Many of the species nearly disappeared. |
C.They became a threat to humans. |
A.In a park. | B.At the restaurant. | C.At Sea World. |
A.Feed them. | B.Hunt them. | C.Protect them. |
1. Where are the two speakers?
A.On the street. | B.In a park. | C.At a square. |
A.Golden retriever. | B.Chihuahua. | C.Samoyed. |
A.He’s cute. | B.He’s shy. | C.He’s dangerous. |
A.A large-sized dog. | B.A brave dog. | C.A smart dog. |