题型:阅读理解 题类:常考题 难易度:普通
安徽省滁州市九校2016-2017学年高二下学期英语期末联考试卷
Rainforests, it turns out, are not created equal. Take the Amazon rainforest, an area that covers about 7 million square kilometers. But within that huge expanse are all kinds of ecological zones, and some of these zones, says Greg Asner, are a lot more crowded than others.
“Some forests have many species of trees,” he said, “others have few. Many forests are unique from others in terms of their overall species composition…” And all of these different small areas of forest exist within the giant space that is the Amazon Rainforest.
So Asner, using the signature technique called airborne laser-guided imaging spectroscopy, began to map these different zones from the air. “By mapping the traits of tropical forests from above,” he explains, “we are, for the first time, able to understand how forest composition varies geographically.”
The results show up in multicolored maps, with each color representing different kinds of species, different kinds of trees, the different kinds of chemical they are producing and using, and even the amount of biodiversity, the animal and plant species that live within each zone.
Armed with this information, Asner says decision-makers now have “a first-time way to decide whether any given forest geography is protected well enough or not. If not, then new protections can be put in place to save a given forest from destruction.”
Asner says the information is a great way for decision-makers to develop a “cost-benefit ratio type analysis.” Conservation efforts can be expensive, so armed with this information, government leaders can ensure they are making the most of their conservation dollars by focusing on areas that are the most biologically diverse or unique.
The next step, Asner says, is to take his project global, and to put his eyes even higher in the sky, on orbital satellites. “The technique we developed and applied to map Peru is ready to go global.” Asner said. “We want to put the required instrumentation on an Earth-orbiting satellite, to map the planet every month, which will give the best possible view of how the world's biodiversity is changing, and where to put much needed protections.
Everyone likes travelling. Travelling makes a person relaxed and get lots of knowledge, especially for teenagers. {#blank#}1{#/blank#} You don't need to be rich to travel, but knowing how much money you have is necessary. If you are not available, you may decide to put off your trip.
{#blank#}2{#/blank#}If you are working, check how much vacation time you have saved up. Check your calendar and decide how many days you can spend travelling.
{#blank#}3{#/blank#} Find out the right season and the right time to leave. For example, if you want to be a tourist in Hangzhou, you'd better start your trip in April or May.
{#blank#}4{#/blank#}There are many websites that you can use to search for your flights, your hotels and many other places which you can visit. You can even book (预订) everything online.
{#blank#}5{#/blank#}Think about what to take during the trip. Your ID card, your passport, your phone, your underwear, your shoes and everything you have to take. Or you will spend your money buying them again.
A. Choose when to go B. Listen to your friend C. Prepare enough money D. Make detailed (详细的) preparations E. Know how long you will be away F. Don't forget about your things |
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