1 . New research led by scientists at the University of Massachusetts Amherst has revealed that the spiny pollen (带刺花粉) of plants in the sunflower family can reduce infection of a common bee parasite (寄生生物) by up to 94 percent. The sunflowers'spiny pollen can destroy a parasite called C. bombi (熊蜂短膜虫), which has been significantly reducing bumblebee populations.
To investigate how sunflowers help bumblebees resist C. bombi, the researchers separated the spiny outer shell of the pollen from the chemical metabolites (代谢物) in the pollen’s core. They then mixed the spiny pollen shells of sunflowers, with the chemistry removed, into the pollen fed to one group of bees.
Another group was fed wildflower pollen with sunflower metabolites and no sunflower shells. The researchers discovered that the bees that ate the spiny sunflower pollen shells had the same response as bees feeding on whole sunflower pollen. These bees had a markedly reduced risk of C. bombi infection compared to those fed sunflower metabolites.
Bumblebees, which are vital pollinators of crops and wildflowers, are experiencing a rapid decline in their populations worldwide. Habitat loss due to urbanization and agricultural intensification is the greatest threat to bumblebees. Climate change is also taking a toll on bumblebees. As temperatures rise, bumblebees are forced to move further north to cooler climates, which can affect their ability to find food and nesting sites. Pesticide use is another significant threat to bumblebees. These chemicals are harmful to them and can damage their navigation and immune systems, leading to reduced reproductive success. Bumblebees play a vital role in maintaining healthy and diverse ecosystems. Understanding how sunflowers protect bees from disease could help us identify other flowers that have similar protective properties. Through this, researchers can work towards developing new strategies to help conserve bumblebees.
1. How does the spiny pollen of sunflowers benefit bees?| A．It protects them from predators. | B．It improves their sense of smell. |
| C．It can be used for their nest building. | D．It helps them resist parasite infections. |
| A．By collecting data. | B．By making comparisons. |
| C．By referring to previous studies. | D．By surveying experienced farmers. |
| A．Habitat loss. | B．Climate change. | C．The use of pesticides. | D．Environmental pollution. |
| A．It offers a way to increase sunflower yield. |
| B．It draws public attention to the role of ecosystems. |
| C．It provides a new idea for protecting bumblebees. |
| D．It allows people to distinguish between different plants species. |
2 . Michael Gonsalves, a chef of Golden Oak at Disney World, has a cuisine concept rooted in fresh, locally-sourced ingredients that originated from childhood harvesting produce from their family garden with his mom to eventually leading kitchens at Walt Disney World Resorts to employ a sustainable model.
“Truly the whole process starts with menu planning,” he said. Creating one dish leads into the creation of many more through the end-to-end use of products. As chefs, they are always searching for the best ingredients. It is then their focus to ensure they appreciate and respect all that go into each and every one of them. For example, they source chicken that is naturally grown and fed on a natural plant forward diet, no hormones (激素) or additives — that’s used in many ways throughout menus from a simple grilled chicken breast to bone soup. Nothing goes to waste.
When they do have waste, even if minimal, they shift it from landfills to transform it into compost (堆肥) that’s then used across the Walt Disney World property. They also support Second Harvest, a local community food bank where healthy produce, prepared, but not served, meals eatable for human consumption are donated. Disney also works with pig farmers when they can’t distribute foods past the point of safety for human consumption. Besides, wildlife reservations love to get the meat because tigers and wild cats can still eat that.
Their operations are “on a path to a sustainable zero waste kitchen of tomorrow” where chefs learn the full-life cycle of plants from seed to plate and gain a better understanding and appreciation for the product and their craft.
Golden Oak at Disney has millions of bees that produce up to 300 pounds of honey per year, plus those bees help with cross pollination (授粉) of their gardens on a daily basis. They advocate a culture that helps develop not only the quality of food, but an appreciation for nature.
1. Where did Michael Gonsalves’ idea about cuisine come from?| A．His mom’s suggestions. | B．His dream of becoming a chef. |
| C．His interest in delicious food. | D．His labor experience as a child. |
| A．They are grilled to eat. | B．They are used to the fullest. |
| C．They are divided into groups. | D．They are selected by quality. |
| A．Give examples about zero waste. |
| B．Introduce the unique habit of wildlife. |
| C．Stress the importance of natural food. |
| D．Explain the operation mode of the food bank. |
| A．Disney World:New Cuisine Road |
| B．Michael Gonsalves:Creative Chef |
| C．Michael Gonsalves:Advocate of Food Diversity |
| D．Disney World:Pioneer in Environmental Protection |
3 . Biologists from Boise State University have been making noise in the forests of the western American state of Idaho. They are making noise to study the value of quiet in nature. They want to know how people and animals react to noise pollution.
The researchers placed outdoor speakers on the side of a half-kilometer-long part of a road in the Boise National Forest. For two years, they played the sounds of passing cars through the speakers. Professor Jesse says they found the sounds caused migratory （迁徙的）birds to flee. The birds also failed to gain weight.
Recently, researchers played sounds of machines that are used to remove natural gas from the ground. That sound is heard in natural gas fields throughout the American West. Professor Barber says these experiments are designed to help researchers learn the effects of noise pollution on birds, insects, bats, and people.
"We are testing the idea that these things are coupled -- that as the soundscape gets louder, wildlife suffers. But that also feeds back on to how much people get out of that experience, how much they value it, and thus how much they are willing to protect that same place."
The research team also studied a group of volunteers who watch birds for fun. Mitch Levenhagen is a graduate student in the research team. He measured how much the artificial noise lessened the ability of the birdwatchers to recognize recorded bird songs.
The birdwatchers said the artificial noise affected their ability to recognize bird sounds more than they thought it would. Birdwatcher Jim Lyons said the experiment caused him to value quiet more.
"I moved out of the city to a little place in the country where I wanted it to be quiet. I greatly value that. It is hard to find those places more and more. There are lots of ways to mitigate（减轻） sound. But it is trade-off. There is always a cost. And it comes down to people's values. What do we value more." said Volunteer Janice Engle.
1. What is the purpose of carrying out the research?| A．To prevent people making any noise in their daily life. |
| B．To find out the effect noise has on humans and animals. |
| C．To call on many more people to protect the environment. |
| D．To encourage people to keep quiet while they are in nature. |
| A．impressive | B．unique | C．instructive | D．convincing |
| A．The great importance of quiet in nature. |
| B．The big price humans will pay for health. |
| C．The great value of a sharp sense of hearing. |
| D．The necessity of protecting wildlife in nature. |
4 . It’s hard to imagine that just 25 years ago, Berlin was a city split (分开) into two by the Berlin Wall. I’ll never forget how people were excited as the Berlin Wall came down in 1989. Since then, Berlin has become one of the coolest cities in Europe. Here are the main reasons why I think Berlin is cool.
It’s affordable. Berlin has cheap hotels and everyday objects. You don’t have to worry about spending too much money when visiting Berlin.
It has fantastic festivals. Berlin knows how to give parties, and there is a festival here every month of the year. Perhaps the most famous is the Berlin International Film Festival.
It has great architecture (建筑设计). Berlin has beautiful architecture of its own. The Brandenburg Gate, built in the 18th century, is one of the city’ s most famous buildings, symbolizing more than 200 years of history. The TV Tower is as good as the Eiffel Tower in Paris and the London Eye.
The art scene is flourishing (繁荣). Berlin is a city of living art. Artists are allowed to create works of art on the sides of buildings.
If you want to visit an affordable European city with culture and lots of colors, Berlin is the place to be. What are you waiting for? Get to Europe’s coolest city before everyone else discovers it.
1. The underlined word “affordable” in Paragraph 2 means “________” in Chinese.| A．可利用的 | B．可触及的 |
| C．付得起的 | D．用得住的 |
| A．Once a week. | B．Twice a week. |
| C．Once a month. | D．Twice a month. |
| A．Its color. | B．Its history. |
| C．Its location. | D．Its architecture. |
| A．He can’t stand it. | B．He thinks it’s boring. |
| C．He doesn’t mind it. | D．He thinks it’s cool. |
