1 . Open an app at your smart phone and scan the code bar on the garbage can. When you throw garbage into the garbage can, it will show the weight of the garbage and the points you can get from doing so.
In some cities, a variety of multifunctional smart garbage cans are being put into use. In Beijing, for example, a smart garbage can is equipped with an LED screen, which not only shows national policies on garbage classification but also shows the correct steps for garbage sorting. It can also calculate the weight of the garbage and the accumulated points one can get. They can be traded for some articles of daily use.
Garbage disposal is a small issue that involves everybody each day. However, it is also a big issue.
| A．Garbage sorting has been a new fashion. |
| B．Another kind of garbage can is even smarter. |
| C．It is no wonder that residents cheered for their presence. |
| D．Such a way of handling garbage has appeared in some cities. |
| E．It will affect China’s transformation towards green development. |
| F．Over 200 million tons of garbage is produced each year in some cities. |
| G．The good habit of garbage classification can improve the living environment. |
2 . By the end of the century，if not sooner，the world’s oceans will be bluer and greener thanks to a warming climate，according to a new study.
At the heart of the phenomenon lie tiny marine microorganisms(海洋微生物) called phytoplankton. Because of the way light reflects off the organisms，these phytoplankton create colourful patterns at the ocean surface. Ocean colour varies from green to blue，depending on the type and concentration of phytoplankton. Climate change will fuel the growth of phytoplankton in some areas，while reducing it in other spots，leading to changes in the ocean's appearance.
Phytoplankton live at the ocean surface，where they pull carbon dioxide(二氧化碳) into the ocean while giving off oxygen. When these organisms die，they bury carbon in the deep ocean，an important process that helps to regulate the global climate. But phytoplankton are vulnerable to the ocean's warming trend. Warming changes key characteristics of the ocean and can affect phytoplankton growth，since they need not only sunlight and carbon dioxide to grow，but also nutrients.
Stephanie Dutkiewicz，a scientist in MIT's Center for Global Change Science，built a climate model that projects changes to the oceans throughout the century. In a world that warms up by 3℃，it found that multiple changes to the colour of the oceans would occur. The model projects that currently blue areas with little phytoplankton could become even bluer. But in some waters，such as those of the Arctic，a warming will make conditions riper for phytoplankton，and these areas will turn greener. “Not only are the quantities of phytoplankton in the ocean changing. ”she said，“but the type of phytoplankton is changing. ”
1. What are the first two paragraphs mainly about?| A．The various patterns at the ocean surface. |
| B．The cause of the changes in ocean colour. |
| C．The way light reflects off marine organisms. |
| D．The efforts to fuel the growth of phytoplankton. |
| A．Sensitive. | B．Beneficial |
| C．Significant | D．Unnoticeable |
| A．Phytoplankton play a declining role in the marine ecosystem. |
| B．Dutkiewicz's model aims to project phytoplankton changes |
| C．Phytoplankton have been used to control global climate |
| D．Oceans with more phytoplankton may appear greener. |
| A．To assess the consequences of ocean colour changes |
| B．To analyse the composition of the ocean food chain |
| C．To explain the effects of climate change on oceans |
| D．To introduce a new method to study phytoplankton |
3 . After years of heated debate, gray wolves were reintroduced to Yellowstone National Park. Fourteen wolves were caught in Canada and transported to the park. By last year, the Yellowstone wolf population had grown to more than 170 wolves.
Gray wolves once were seen here and there in the Yellowstone area and much of the continental United States, but they were gradually displaced by human development. By the 1920s, wolves had practically disappeared from the Yellowstone area. They went farther north into the deep forests of Canada, where there were fewer humans around.
The disappearance of the wolves had many unexpected results. Deer and elk populations — major food sources (来源) for the wolf — grew rapidly. These animals consumed large amounts of vegetation (植被), which reduced plant diversity in the park. In the absence of wolves, coyote populations also grew quickly. The coyotes killed a large percentage of the park’s red foxes, and completely drove away the park’s beavers.
As early as 1966, biologists asked the government to consider reintroducing wolves to Yellowstone Park. They hoped that wolves would be able to control the elk and coyote problems. Many farmers opposed the plan because they feared that wolves would kill their farm animals or pets.
The government spent nearly 30 years coming up with a plan to reintroduce the wolvers. The U.S. Fish and Wildlife Service carefully monitors and manages the wolf packs in Yellowstone. Today, the debate continues over how well the gray wolf is fitting in at Yellowstone. Elk, deer, and coyote populations are down, while beavers and red foxes have made a comeback. The Yellowstone wolf project has been a valuable experiment to help biologists decide whether to reintroduce wolves to other parts of the country as well.
1. What is the text mainly about?| A．Wildlife research in the United States. |
| B．Plant diversity in the Yellowstone area. |
| C．The conflict between farmers and gray wolves. |
| D．The reintroduction of wolves to Yellowstone Park. |
| A．Damage to local ecology. |
| B．Preservation of vegetation. |
| C．A decline in the park’s income. |
| D．An increase in the variety of animals. |
| A．Doubtful. | B．Uncaring. | C．Positive. | D．Disapproving. |
4 . The natural wilderness of the Antarctic is under threat because of the increasing number of tourists. They come to Antarctic to
Scientists worry that this
A major
As a result of the Norwegian
Whatever the
| A．hunt | B．preserve | C．train | D．observe |
| A．curiosity | B．courage | C．competence | D．encouragement |
| A．display | B．change | C．address | D．worsen |
| A．reform | B．growth | C．faith | D．investment |
| A．conclusion | B．promise | C．concern | D．decision |
| A．pollution | B．stress | C．conflict | D．inconvenience |
| A．Obviously | B．Generally | C．Surprisingly | D．Fortunately |
| A．large | B．heavy | C．strong | D．luxury |
| A．clean up | B．give up | C．hold up | D．build up |
| A．boiled | B．stored | C．coated | D．burned |
| A．exploration | B．accident | C．behavior | D．attitude |
| A．explanations | B．suggestions | C．arrangements | D．announcements |
| A．ban | B．claim | C．comment | D．debate |
| A．creatures | B．rocks | C．water | D．ice |
| A．debt | B．shape | C．position | D．trouble |
| A．lack for | B．call for | C．respond to | D．adjust to |
| A．benefits | B．purposes | C．solutions | D．challenges |
| A．allowing | B．governing | C．requiring | D．admitting |
| A．However | B．Therefore | C．Moreover | D．Otherwise |
| A．agree on | B．focus on | C．try on | D．catch on |
5 . Two little girls,14-year-old Cindy and 12-year-old Lucy, wrote to a newspaper office, asking some fast food restaurants to stop giving away free plastic (塑料) toys. Many people read the letter and supported them.
“We have been learning all about the environment at school and the problem of plastic. It made us very sad to see how plastic harms wildlife and pollutes the ocean, and we want to change this.That’s why we want the fast food restaurants to think of the environment and stop giving away plastic toys with their kids meals.” the two girls wrote in their letter.
“We like to go to eat in fast food restaurants, but children only play with the plastic toys they give us for a few minutes before they get thrown away. In the end, they will harm animals and pollute the sea. We want anything they give us to be sustainable (可持续发展的), so we can protect the earth for us and for future humans,” they continued.
The letter made a large number of readers pay attention to them. The number of people who supported them almost doubled after reporters followed the two little girls.
Since the little girls’ story started being picked up by news reporters, the fast food restaurants had to give a reply to the newspaper office, telling about their plans for making their free toys more sustainable.
1. The two little girls wrote to the newspaper office in order to ________.| A．get some fast food |
| B．get some free presents |
| C．stop children having junk food |
| D．stop fast food restaurants giving away plastic toys |
| A．At home. | B．At school. |
| C．In a restaurant. | D．In a library. |
| A．fast food restaurants | B．fast food |
| C．plastic toys | D．waste water |
| A．They may stop giving away free plastic toys. |
| B．They may make free toys with paper and cloth. |
| C．They may sell their plastic toys to other countries. |
| D．They may make free plastic toys more sustainable. |
