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 (溶解) in the water, or seawater in this case, it forms a weak acid (酸), 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 Dore and his colleagues have analyzed confirms what the theory predicts.
The effect was particularly 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 picked up 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.”
72. What can be the best title of the passage?
A. Sea Life Facing Danger B. Scientist Researching Seawater
C. Oceans Becoming More Acidic D. Climate Change Affecting Seawater
73. 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→b→c→d→e B. e→b→c→d→a
C. a→e→c→d→b D. e→d→c→b→a
74. Scientist Robert Dore came to the conclusion based on ________.
A. his research and analysis B. the expectation of other scientists
C. some former theory D. a major cause of climate change
75. What does the passage want to tell us most?
A. It takes time to make a scientific study.
B. Atmospheric CO2 is a major cause of climate change.
C. Robert Dore is a committed and serious scientist.
D. Measures should be taken to prevent the potential catastrophe.
第二节：书面表达(满分25分)
近来，越来越多的学生在校外租房而不愿住寝室。请根据下面提示，一分为二地写一篇短文，说说两者各自的好处与弊端，并发表你的观点。
1.学习时间和效果
2.安全性
3.自由性
4.与同学交往
注意：1、两方面的理由至少要有两条;
2、词数：100左右;
3、寝室—dormitory
Nowadays, some students
高三英语试题答案
1-5 BCBBB 6-10 CBACA 11-15 BCBAA 16-20 BBCBA
21-25:ACBCD 26-30: CACAD. 31-35: ACADB.
36-40 BADCA 41-45 BDCAD 45-50 BCADB 51-55 DACDA
56-58 DAD 59-63 ADBCA 64-67 CADC 68-71 CCAA 72-75 ABAD
76.heard 77.terrible 78. disasters 79 .predict 80. ignoring 81.about 82.attention
83.damage/destroy 84.took 85.contribution
第二节：书面表达(满分25分)
Nowadays, some students would not like to live in a dormitory. Instead, they rent houses outside the school. There are advantages for both. Living in a dormitory can increase the friendship and cooperation with roommates. An, of course, it is safer. A dormitory is more like a small society, which enables students to learn to adapt to each other, and prepare for the social life later. As for renting houses to live alone, it’s better for study as you can feel free in your own room without being interrupted by others. As a result, you can have more time to devote yourself to studying whole-heartedly. But there may appear some safety problems as you live outside of the school.
Anyhow, as a student, I prefer living in a dormitory.
【总结】高三英语期中试题就为大家介绍到这儿了，大家要多做题，多练习，才能多进步。希望大家在www.kmf8.com学习愉快。
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