Using Garbage as a Fuel

    Garbage can be a good fuel to use. The things in garbage do not look {#blank#}1{#/blank#}coal, petroleum, or natural gas, but they are chemically similar to these fossil fuels. As we use up our fossil fuel supplies, we might be able to use garbage as {#blank#}2{#/blank#}energy source. Burning garbage {#blank#}3{#/blank#}( be) not a new idea. Some cities in Europe and the United States {#blank#}4{#/blank#}(burn) garbage for years. The heat that is produced by burning garbage is used to boil water. The steam that is produced is used to make electricity or to heat nearby {#blank#}5{#/blank#}( build). In Paris, France, some power plants burn almost 2 million metric tons of the city's garbage each year. The amount of energy {#blank#}6{#/blank#}(produce) is about the same as would be produced by burning almost a half million barrels of oil!

    But there are problems in using garbage as a fuel. Garbage that burns {#blank#}7{#/blank#}(easy) , such as food and paper, must be separated from metals, glass, and other materials {#blank#}8{#/blank#}do not. Another problem is that burning garbage can pollute the air. Our fossil fuel supplies are {#blank#}9{#/blank#}(limit) . Burning garbage might be one kind of energy source that we can use to help meet our energy needs. This method could also reduce the amount of garbage {#blank#}10{#/blank#}(pile) up on the earth.

    For thousands of years, fishes {#blank#}1{#/blank#} (feed) the people of Peru. It was only when the industrial fishing boats got started in {#blank#}2{#/blank#}1950s that people lost interest in the fish. Modern fishery turned most of its catch into fishmeal(鱼饲料) for feeding other animals. In fact, most of the fish {#blank#}3{#/blank#} (catch) yearly around the world are for use other than eating, and 90% of them are {#blank#}4{#/blank#} (perfect) good to eat.

    White is a researcher at the University of British Columbia and he spent years {#blank#}5{#/blank#}(research) into fishery catches around the world. According {#blank#}6{#/blank#} his study, about 27% of ocean fish which were caught became fishmeal or fish oil. Those products were used to feed farmed fish or used in agriculture.

    “There could be a {#blank#}7{#/blank#} (good) use of these fish,” says White. Instead of feeding fish to fish, the fish could feed people, especially those {#blank#}8{#/blank#} need high-quality protein. But the reason why that doesn't happen is a {#blank#}9{#/blank#} (combine) of economics and regulations(法规). In many places, a fisherman can get more money if he sells his catch for fishmeal than if he sells it to the locals for {#blank#}10{#/blank#} meals. And in Peru, a change in how fishes are handled could both satisfy the need to feed the people and supply the fishmeal industry.

    Chinese researchers have planned to build an airport in Antarctica in November. The Chinese {#blank#}1{#/blank#} (be) not very used to flying to the southernmost continent, because the country s first polar plane, the Snow Eagle 601, {#blank#}2{#/blank#} (put) into use only three years ago.

    Before the Snow Eagle 601, Chinese researchers traveled to the ice-covered land by ship, which took significantly {#blank#}3{#/blank#} (long) than flying. There are currently more than 20 airports in Antarctica, but none of them belong to China. The Snow Eagle 601 has to rely on Russian airports {#blank#}4{#/blank#} (take) off and land. That's {#blank#}5{#/blank#} the Chinese researchers decided to build their own. Building an airport in Antarctica is very different from building one elsewhere. The continent is covered by a {#blank#}6{#/blank#} (constant) moving layer of ice, so the builders must find somewhere that moves at the slowest possible pace and in a {#blank#}7{#/blank#} (fix) direction.

    The builders managed to find a spot back in early 2017 following {#blank#}8{#/blank#} tough measuring process that took place in the storm-like polar winds. The next problem is the snow. The soft nature of snow makes {#blank#}9{#/blank#} a bad material for a runway. So the builders must use road roller-like {#blank#}10{#/blank#} (machine) to press the snow, which can be very time-consuming in extreme coldness.

What's the right college for you?

    {#blank#}1{#/blank#}(do) the college you're considering offer classes and learning opportunities {#blank#}2{#/blank#} interest you? You don't need to declare a college major until your junior year of college—but you're more likely {#blank#}3{#/blank#}(succeed) if you're excited about and engaged by the options available to you.

    Consider{#blank#}4{#/blank#} (you) learning style: do you prefer informative lectures or lively discussions?

    Research and analysis or hands-on experience and practice? Writing papers or working in small groups?

    Look for the academic experience you'll need to feel {#blank#}5{#/blank#}(challenge) and engaged, and what support you'll need for success—peer tutoring, {#blank#}6{#/blank#}(access) professors, and career services are just some of {#blank#}7{#/blank#} options you might find on campus. Check out course and program {#blank#}8{#/blank#}(describe), reviews of professors, and sit in on some classes if you're able to visit campus.

    {#blank#}9{#/blank#}(assess) your chances of admission can be a good way to identify a strong academic match. Most admissions counselors tell us that your GPA and the quality of your high school classes are the most important elements of your college application, {#blank#}10{#/blank#}standardized test scores not far behind.

Trees, plants and flowers are all around us and we enjoy their beauty every day. However, we are so used to them {#blank#}1{#/blank#} we may even take them for granted without {#blank#}2{#/blank#}(realize) how much inspiration they have given us. In fact, nature has inspired many of the most {#blank#}3{#/blank#}(fascinate) designs around us, including those in architecture. Nature {#blank#}4{#/blank#} (present) in various architectural designs.

Today, architects continue to explore ways {#blank#}5{#/blank#} (capture) the beauty of natural forms, to mimic the way nature works or even to make natural organisms part of a building. ArtScience Museum, Singapore was designed to show the {#blank#}6{#/blank#} (connect) between nature and the modern city environment in which it sits. Visitors are often amazed to find themselves in an urban building that so {#blank#}7{#/blank#}(true) captures the beauty of natural forms. Harare's Eastgate Centre is {#blank#}8{#/blank#} superb example of biomimicry (仿生学). To use biomimicry is to create structures {#blank#}9{#/blank#}(base) on natural forms and processes. Creating buildings such as these enables us to live {#blank#}10{#/blank#} closer harmony with our environment.