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UNIT 5 HUMANS AND NATURE
单元同步检测（四）
一.单词拼写
1.So far, scientists haven’t (证明)it is true.
2.She answered all my questions with her usual (诚实).
3.The nursery is bright and (令人愉快的)with plenty of toys.
4.The lion dance performers need to have a solid (基础) of kung fu skills first.
5.I live on an island that borders the (大陆) of Australia.
6.The c of the ship was advised to turn back due to a sudden heavy storm.
7.No one will ever know what mix of talent, /æmˈbɪʃn/, energy and luck made Dickens such a distinguished writer.
8.The p bear is found in the Arctic Circle and some big land masses as far south as Newfoundland.
二.单句语法填空
1.As we left, we had a photograph (take) together.
2.I wasn’t (bravery)enough to tell her what I thought of her.
3.In preparation lectures, I urge you to do some reading.
4.It was with (sincere) and faithfulness that we created a harmonious(和谐的)atmosphere.
5.The two countries are going to meet to break some trade barriers between them.
6.While high school does not generally encourage students to explore new aspects of life, college sets the stage for that (explore).
7. (anxious), she took the dress out of the package and tried it on, only to find it didn’t fit.
8.Mr. Smith was the first (leave) on September 10th.
9.The elephant had heard the (distance) alarm calls of animals and her mood suddenly changed.
三.语法填空
On 1 June, 1910, Captain Scott began his journey 1 Antarctica. At the same time, the Norwegian explorer Roald Amundsen was also going south. During the polar summer, both teams organised food bases in 2 (prepare) for their journeys. Amundsen reached the Antarctic first. Then he prepared for the return journey. Scott 3 (final) arrived at the Pole. They 4 (shock) when they saw the Norwegian flag. Scott wrote sadly in his diary: “Well, we have now lost the goal of our ambition and must face 800 miles of hard pushing—and goodbye to most of our 5 (dream).”
The return journey was one of the worst in the history of exploration. The weather conditions were terrible. Scott realised their 6 (hope) situation: “We are very cheerful, but what each man feels in his heart...” Then a terrible storm started. Scott spent some of his last hours 7 (write). He wrote a letter full of sadness to his wife. The news of Scott’s death shocked 8 world. He had failed 9 (win) the race to the Pole, but the extraordinary courage 10 (show) by Captain Scott and his men made them heroes.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.
四.阅读理解
A
In the past 50 years, the amount of water in the open ocean with zero oxygen has gone up more than fourfold. In coastal water bodies, including river mouths and seas, low-oxygen sites have increased more than tenfold since 1950. Scientists expect oxygen to continue dropping even outside these zones as the Earth warms.
“Oxygen is fundamental to life in the ocean,” said Denise Breitburg, a marine ecologist at the Smithsonian Environmental Research Center. “The decline in ocean oxygen ranks among the most serious effects of human activities on the Earth’s environment. Actually, it’s a great loss to all the support services that rely on recreation and tourism, including hotels, restaurants, taxis and everything else. The reverberations(影响) of unhealthy ecosystems in the ocean can be extensive.”
In areas traditionally called “dead zones”, like those in the Chesapeake Bay and the Gulf of Mexico, oxygen plummets(暴跌) to so low levels that many animals die. As fish avoid these zones, their habitats become smaller and they’re easier to be attacked or caught. But the problem goes far beyond “dead zones”. Even smaller oxygen decline can prevent growth in animals, hinder reproduction and lead to disease or even death. It also can cause the release of dangerous chemicals such as nitrous oxide, a greenhouse gas up to 300 times more powerful than carbon dioxide. While some animals can boom in “dead zones”, overall biodiversity falls.
Climate change is the key criminal in the open ocean. Warming surface waters make it harder for oxygen to reach the inside of the ocean. Furthermore, as the ocean as a whole gets warmer, it holds less oxygen. In coastal waters, too much nutrient pollution from land creates algal blooms, which run out of oxygen as they die and break down.
People’s livelihoods are also on the line, the scientists reported, especially in developing nations. Smaller fisheries(渔场)may be unable to relocate when low oxygen destroys their harvests or forces fish to move elsewhere. So we humans have to carry on a war now and win the war.
1.What does the first paragraph mainly talk about?
A.The ocean has been losing its oxygen.
B.The amount of sea water is increasing.
C.The coastal water bodies are dangerous.
D.The Earth becomes warmer and warmer.
2.What can we infer from Denise Breitburg’s words?
A.Different oceans have
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