《Living well》单元检测试卷

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人教版选修七 Unit 1 Living well
　　单元综合检测
　　第I卷
　　第一部分 阅读理解
　　第一节 阅读下列短文，从每题所给的四个选项 （A 、B 、C  和 D ）中，选出最佳选项，并在题卡上将该项涂黑。
　　A
　　Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmospheric CO2 is also affecting the ocean chemistry and potentially harming sea life.
　　Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades. “We've been going to the same spot in the Pacific Ocean, and we try and characterize long-term change in the open ocean environment. And one of the key things that we measure is CO2 levels. And we've been able to record this increasing quantity of atmospheric CO2 into the ocean.”
　　Scientists expected that as atmospheric CO2 increased, more and more of the carbon dioxide would be absorbed into the ocean, affecting the chemical balance of the sea water, with a potentially harmful impact on shellfish and coral in particular.
　　“As carbon dioxide dissolves in the water, or seawater in this case, it forms a weak acid, carbonic acid,” Dore explains. “And therefore, as the concentration of CO2 in the atmosphere goes up and that exchanges with the surface seawater, it drives the PH down, and makes it more acidic.”
　　The seawater samples Dore and his colleagues have analyzed confirm what the theory predicts.
　　The effect was particular striking at about 250 meters down, and again at 500 meters. Dore and his colleagues came up with two possible explanations. It could be that surface water picp CO2 and then moved to those depths. Or there could be a biological explanation.
　　“It's important to realize that the oceans are really becoming acidic. And it can have negative impacts on a whole variety of sea life from fish to coral. It's potentially catastrophic.”
　　1. What can be the best title of the passage?
　　A．Climate Change Affecting Seawater
　　B．Oceans Becoming More Acidic
　　C．Sea Life Facing Danger
　　D．Scientist Researching Seawater
　　2. With the increase of atmospheric CO2，________.
　　A．the surface water is becoming warmer
　　B．more corals will appear in the sea
　　C．the PH of the ocean out here has been increasing
　　D．the chemical balance of the seawater is affected
　　3. Which of the following shows the process of the impact of atmospheric CO2 on sea life?
　　a．Sea life is endangered.
　　b．CO2 goes into the surface water.
　　c．The ocean chemistry is affected.
　　d．CO2 decreases the PH and makes the seawater more acidic.
　　e. CO2 levels in the atmosphere go up.
　　A．a→e→b→c→d B．e→d→c→b→a
　　C．e→b→c→d→a D．a→b→c→d→e
　　B
　　I was never very neat, while my roommate Kate was extremely organized．Each of her objects had its place, but mine always hid somewhere．She even labeled(贴标签) everything．I always looked for everything．Over time, Kate got neater and I got messier．She would push my dirty clothing over, and I would lay m