E

“ The world’s oceans are slowly getting more acidic.” Say scientists. The researchers from California report that the change is taking place in response to higher levels of carbon dioxide in the atmosphere.

The lowering of the water’s PH value is not great at the moment but could cause a serious threat to current ocean life if it continues, they warn. Ken Calderia and Michael Wickett, from the Lawrence Livermore National Laboratory, report their concerns in the journal Nature. Increasing use of oil fuels means more carbon dioxide is going into the air, and most of it will eventually be absorbed by sea water. Once in the water, it reacts to form carbonic acid. Scientists believe that the oceans have already become slightly more acidic over the last century.

These researchers have tried to predict what will happen in the future by combining what we know about the history of the oceans with computer models of climate changes. “This level of acidity will get much more extreme in the future if we continue releasing CO2 into the atmosphere,” said Dr Calderia. 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 disastrous events 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 deep ocean life forms may be more sensitive to PH changes. Coral reefs and other organisms whose shells contain calcium carbonate() may be particularly affected if the water’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 station in the deep ocean as a way of dealing with global warming. But Dr Calderia said such a strategy should now be re-considered. “Previously, most experts had looked at ocean absorption of carbon dioxide as a good thing—because 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.”

57. The ocean is becoming more acidic due to _________.

A. the lower water PH value                B. the warming atmosphere

C. the higher level of CO2 in the air          D. the increasing use of oil fuels

58. According to Dr Calderia, _________.

A. ocean absorption of carbon dioxide is a good thing

B. more oil fuels will be used in the near future

C. scientists may predict climate changes with computer models

D. the future situation of the amount of acidity is extremely serious

59. If the water’s acidity level keeps rising, _________.

A. ocean life whose structures contain calcium carbonate may be affected

B. the water’s PH value will become higher and higher

C. organisms living near the surface are more sensitive to PH changes

D. some disastrous events will occur more often than before

60. Most experts once believed storing carbon dioxide in the ocean would reduce ________.

A. the CO2 absorbed by the ocean           B. the amount of greenhouse warming

C. the acidity of the ocean                 D. the gradual release of CO2

第二节：在61-65题中，Ronald, Versa, Rosalind, Clarence 和Tracy正各计划买一本书。阅读下面六本书的介绍(选项A、B、C、D、E、F)，选出符合各自要求的最佳选项，并在答题纸上将该选项标号涂黑。选项中有一项是多余选项。

___61. Ronald is an African-American student who is very hardworking at all his subjects especially in American history. He is eager to know the whole history of the USA and wishes to get an ideal book to realize his dream.

___62. Versa used to be ill in hospital for quite some time and therefore has great difficulty with his studies. He can't even understand what his teachers say in class. Therefore, he is in great need of a valuable book to give him a hand.

___63. It's only two months before Rosalind's mother's birthday comes. Deeply loving her mother, Rosalind is to give her a great surprise by cooking a rich and delicious birthday dinner for her. As she is now poor in cooking, she needs a book for her purpose.

___64. Clarence aims at entering a leading university. To his great pity, high grades seem still a long way from him even though he has devoted most of his energy and time to his lessons. How he wishes to get a book for good tips on studying and time management!

___65. Tracy is good at music and drawing and is thought to be gifted in art. She herself also has decided to work herself towards this direction. Only natural talent and ideas are not enough. She still needs some other help besides that from teachers.She wants to buy a book which meets her need.

第II卷(共40分)

第三部分：写作(共两节，满分40分)

第一节：短文改错(满分10分)

下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号(∧),并在其下面写上该加的词。

删除：把多余的词用斜线()划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1.每处错误及其修改均仅限一词;

2.只允许修改10处，多者(从11处起)不计分。

例如：

It was very nice to get your invitation to spend ∧ weekend with you. Luckily

the

I was completely free then, so I’ll to say “yes”. I’ll arrive in Bristol at around 8 p.m. in

am                                                                on

Friday evening

My car just wouldn’t move any farther. It was complete dead, and I was a few miles away from my home in that cold, wet night. I decided walk around a little before accepting I’d have to spend the night in the car. Maybe I can find a telephone. Actually, I didn’t have to walk far before I found the small house standing in a field with a light shone from the sitting room. I knocked at the door and was delighting when a pleasant old man opened the door but listened to my story carefully. He said he had no telephone and that it wasn’t any within walking distance, but the old man who offered to go to repair my car.

第二节：书面表达(满分30分)

假如你叫李华，正在向英国曼彻斯特大学(Manchester  University)提出入学申请。在校方需要的相关材料中，你要准备一份个人简历。现在，请你根据下列信息，写一份自传体(autobiography)的个人简历。

1.在温州一所中学读书，今年六月毕业;

2.父母在本地经营一家小公司，暑假我也会在那儿帮忙;

3.高一时搬家，就读于一所新学校，结识了许多朋友;

4.喜欢音乐，也参加了校体操队;

5.开始思考将来的发展，想成为一个翻译人才;

6.为提高语言水平，想去英国学习。

注意：1.开头部分已写好，只需接着写。

2.可适当增加细节，使所写文字连贯。

3.词数：100—120。

My name is Li Hua. I was born in Wenzhou seventeen years ago and I have lived here all of my life.

【总结】高三英语期末试题就为大家介绍到这儿了，小编的整理有帮助到大家吗?如果大家还需要了解更多有关学习的内容，请继续关注精品学习网。

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