20xx廣東省廣州市初二英語下冊期末模擬考-wenkub
2023-04-18 23:05:25 本頁面
【正文】 ve that the oceans have already bee slightly more acidic over the last century. These researchers have tried to predict what will happen in the future by bining what we know about the history of the oceans with puter models of climate change．This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere, said Dr Caldeira. And we predict the amount of future acidity will exceed anything we have seen over the last several hundred million years, let alone perhaps after rare disasters such as asteroid impacts．” However, it is not absolutely clear what that means for ocean life．Most organisms live near the surface, where the greatest PH change would be expected to occur, but deepocean life forms may be more sensitive to PH changes．Coral reefs(珊瑚礁) and other organisms whose shells contain calcium carbonate may be particularly affected if the water39。t tell the visitors about it. Mrs King thought for a few 22 and had an idea. She said to her 23 , Oh, it39。Monday morning is an important time at our of the students go to the playground 1 the national flag go Monday a boy gave the talk before the flag was 2 and proud! 3 brave he was!I wanted to have a try, 4 . Last week my teacher 5 to me, “Next Monday you can give the and write something ready 6 ’m sure you’ll do well.” “Thank you,” I was 7 for I got home,two passages 8 for the talk at once, Ipracticed 9 it again and again. 10 I read, I asked my parents to listen to morning came, I began to feel was my 11 time to give a talk to so many stood in front of opened my mouth,but I couldn’t say then,I looked down, I noticed about 500 people. 12 eyes were saying, “You can do it perfectly. Don’t be shy. Just talk aloud.” I took 13 deep breath. Then I began to talk. I didn’t know how I finished my talk. 14 I succeeded in finishing it. I showed everyone 15 I could do. 1. watch 2. 3. a a 4. well as 5. said 6. 7. great chance a great chance great chance a great chance 8. written writing 9. read reading 10. 11. first 12. 13. D.\ 二、完形填空 （共10題，）從下面各題給出的四個答案中，選出最佳答案Mr. and Mrs. King have lived in our town for nearly twenty years. They have a book shop by the bus station. They39。re polite to everyone and have a lot of friends. They often 16 the poor students and sell them some books cheaply. So there39。s eleven o39。s acidity levels keep going up, the team predict. They could find it much more difficult to build these structures in water with a lower PH. In recent years some people have suggested storing carbon dioxide from power stations in the deep ocean as a way of dealing with global warming．But Dr Caldeira said that such a strategy should now be reconsidered. Previously, most experts had looked at ocean absorption of carbon dioxide as a good thingbecause in releasing CO2 into the atmosphere we warm the planet, and when CO2, is absorbed by the ocean, it reduces the amount of greenhouse warming.” 26. The ocean is being more acidic due to___________. A
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