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题型:阅读理解-阅读单选 难度:0.65 引用次数:522 题号:4939673

This is the SCIENCE IN THE NEWS, I'm Barbara Klein.

Animal experts say one of the world's most beautiful and rare kinds of big cat is close to disappearing from the wild. A study earlier this year found that about thirty Amur leopards (豹) still live free. The cats are also called Far Eastern leopards.

Recently, their number has been reduced by one, Some person shot a female Amur, then beat her to death. The animal's body was discovered last month in the Barsovy National Wildlife Refuge in eastern Russia.

An official of the World Wildlife Fund, Darron, said this was the third such killing in the area in the past fives years. Mr, Collins said the death of even one adult female is a huge loss for the endangered cat, He noted that the killing reduces the possibility for cubs (幼兽) or young.

It is not clear how many Amur leopards still live free. One population count was performed in February and March. Wildlife expert Dmitry Pikuuov led this study. It found evidence of seven to nine males. The study identified three to seven females without cubs, Four leopards were identified as females with cubs. In all, five or six cubs were recorded, Six to eight animals could not be identified.

Most of the land where the Amur leopard once lived was in China.New roads and climate change there threatened the animals. So did hunters who kill big cats for their body parts.

Mr. Pikuuov says adult Amurs need about five hundred square kilometers with good forests to survive. He said they also need a large and continuing supply of animals like deer for food. He believes the answer to saving the Amur leopard is for governments to provide protected spaces for wildlife.

1. This passage is probably from           .
A.a magazineB.a newspaper report
C.a TV reportD.a film
2. Why is the killing of an adult female a huge loss?
A.It could lead to the death of an adult male.
B.It means it can not give birth to the young any more.
C.11 is worth more money than a male.
D.There is only one adult female in the world.
3. The number of the Amur leopards in China is becoming smaller because of all the following EXCEPT           .
A.new roadsB.climate change
C.human huntingD.rare diseases
4. According to the experts the Amur leopards          .
A.are living on plantsB.are living in the zoo
C.are well protected by peopleD.are endangered

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【推荐1】If you read the news about honeybee survival, it’s all very confusing.

The Hoover Institution’s Dr. Henry Miller notes, “The reality is that honeybee populations are not declining. According to the U. N. Food and Agriculture Organization (FAO) statistics, the world’s honeybee population rose to 80 million colonies (群落) in 2011 from 50 million in 1960.”Meanwhile, Jennifer Sass of the Natural Resources Defense Council points out. “The number of managed honeybee colonies in the U.S. has dropped from 4 million hives (蜂群) in 1970 to 2.5 million today”

Surprisingly, both of these claims are correct. Miller points to the “global” commercial honeybee hive count, which has grown considerably. Sass points to domestic colony numbers only, which have in fact declined.

Far more bees are farmed for making honey than for pollination (传粉) services. Since more honey is now made overseas than it was in the past, more hives are kept overseas, and fewer in the United States and Europe. And the global number of commercial hives and the amount of honey they produce have grown to meet the demands of an expanding world population. Such shifts offer no evidence of a honeybee hive “crisis”. They simply represent the market forces of supply and demand.

The FAO data also clarifies that national or even regional declines in the size of the managed honeybee population cannot prove claims of a global pollinator decline or a pollination crisis. However, it emphasizes that solutions to those problems must be motivated locally, rather than globally.

Solutions will follow only if we take a non-subjective look at the issues, so we can address them appropriately rather than have a crisis mentality. As I highlight in a recent post for TheHill, a big part of the solution lies at the very local level: with the beekeepers, farmers, and communities that surround them.

1. What makes the news confusing?
A.Various species.B.Contradictory conclusions.
C.Complicated statistics.D.Different effects.
2. What contributes to the growth of commercial hives?
A.The claims of the FAO.B.The shift of honey export.
C.The more services of pollination.D.The increasing demands for honey.
3. What’s the author’s attitude to the honeybee population issue?
A.Objective.B.Supportive.
C.Confused.D.Doubtful.
4. What is true about the solution to the issue of honeybee population?
A.It lies at the global motivation.
B.It causes a crisis mentality.
C.It arises with a non- subjective view on the problem.
D.It highlights the communities of the local farmers.
2021-12-04更新 | 54次组卷
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文章大意:这是一篇新闻报道。文章报道了肯尼亚21头东部黑犀牛成功迁移到草地高原的新家,这将给它们提供生存空间,并有助于增加这种极度濒危动物的数量。

【推荐2】A successful move of 21 eastern black rhinos (犀牛) to a new home of a grassy plateau that hasn’t seen them in decades will give them space to live and help increase the population of the critically endangered animals. It was Kenya’s biggest rhino relocation ever.

The rhinos were taken from three parks that are becoming overcrowded to the private Loisaba Conservancy, where rhinos were wiped out by poaching (偷猎) decades ago.

The 18-day exercise involved tracking the rhinos using a helicopter and then shooting them with tranquilizer darts(麻醉飞镖). Then the animals—which weigh about a ton each—have to be loaded into the back of a truck for the move. Disaster nearly struck early in the relocation effort, when a tranquilized rhino fell into a river. Workers held the rhino’s head above water with a rope to stop it from drowning while the tranquilizer drug took effect, and then the rhino was freed.

Some of the rhinos were transferred from Nairobi National Park and made a 300-kilometer trip. Others came from two parks closer to Loisaba.

Rhinos are generally animals enjoying being alone and are at their happiest in large living areas. As numbers in the three parks where the rhinos were moved from have increased, wildlife officials decided to relocate some in the hope that they will be happier and more likely to increase. David Ndere, an expert on rhinos at the Kenya Wildlife Service, said their reproduction rates decrease when there are too many in a territory.

Kenya has had relative success in recovering its black rhino population, which dipped from around 20, 000 in the 1970s to below 300 in the mid-1980s because of hunting, according to conservationists, raising fears that the animals might be wiped out completely in the country. Kenya now has around 1, 000 black rhinos, the third biggest population behind South Africa and Namibia. There are just over 6, 400 wild black rhinos left in the world, all of them in Africa, according to the Save the Rhino organization.

1. What’s the reason why the rhinos were moved to a new home?
A.Locals’ deadly effects.B.Their limited living space.
C.Their too large population.D.Their preference for a grassy plateau.
2. What can we infer about the rhinos’ move from Paragraph 3?
A.Moving rhinos safely was a very serious challenge.
B.The method of transporting rhinos was too backward.
C.Many disasters happened during the rhino relocation.
D.Most rhinos in the three parks migrated on their own.
3. What does the Kenya government hope to achieve from the rhino’s move?
A.A reintroduction of an endangered animal.B.A gradual increase of the rhino population.
C.A much larger national natural park in Kenya.D.A more booming tourism with rhino exhibitions.
4. What can be the best title for the text?
A.Ways to Move Rhinos SafelyB.Black Rhinos’Situation in Kenya
C.Kenya’s Biggest Rhino RelocationD.The Black Rhino Reserves in Kenya
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阅读理解-阅读单选(约340词) | 适中 (0.65)
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【推荐3】The tomato leafminer moth (飞蛾) originates from Per u and is common throughout South America. However, it has spread through Europe since 2007 and has become one of the largest pests in Mediterranean regions, threatening food supplies. Experts around the world are currently struggling with new ways to battle the moth, but it has developed resistance to pesticides (杀虫剂), leaving farmers helpless to stop the damage. A new study from the University of Portsmouth has shown that the answer may lie in the tropical tent web spider.

Scientists carried out laboratory tests and found that the spiders banded together to form webs that easily caught the flying insects, which they then ate. Dr Lena Grinsted, the lead author of the study, said, “The tropical tent web spiders operate in large groups and can create giant joined-up webs capable of catching insects in the air. This could potentially lead to a reduction of reliance on chemical pesticides, resulting in less pollution in soils, waterways and food chains in the future.”

Crop damage is also caused by the larvae (幼虫), which directly attack the tomato fruit, making the crop ugly and thus unmarketable. Larvae live inside the leaf until they begin the process of turning into a moth, making them difficult to control. However, scientists expect that targeting the adult moth population will reduce the number of eggs being laid. In addition, the spiders build the biggest webs during the summer, which can benefit the tomato planting and growing season in May and June.

The researchers said the study would “open doors for the use of group-living spiders to control agricultural pests” but warned that more work was needed to check the spiders did not change the eco logy of regions. Dr Grinsted added, “Future studies are needed to investigate whether the spiders may negatively impact crop pollination (授粉) by also catching bees and other key pollinators.”

1. Why is it difficult to get rid of the moth according to paragraph 1?
A.It is large in size.B.It is drug-resistant.
C.It spreads too quickly.D.It threatens food supplies.
2. What made using the spiders to control pests possible?
A.Their ability to weave huge webs.B.Their importance in the food chain.
C.The effect of chemical pesticides on soil.D.The cost reduction of building waterways.
3. How do scientists plan to deal with the larvae?
A.By stopping them from hatching.B.By controlling their sources.
C.By reducing their food supplies.D.By destroying the eggs of adult moths.
4. What is a suitable title for the text?
A.Moths: The Biggest Threat to CropsB.Spiders: The Insect-Catching Lovers
C.Moths: A Headache for Modern AgricultureD.Spiders: An Eco-friendly Alternative to Drugs
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