________rise in carbon dioxide is causing____...

______rise in carbon dioxide is causing _______ steady increase in global warming.

A. The; a　　　　　　 B.不填; a　　　　 C. The;不填　　 D.A；the

高三英语单项填空中等难度题查看答案及解析

________rise in carbon dioxide is causing________steady increase in global warming.

A. The; a           B. 不填; a       C. The; 不填          D.A；the

高三英语简单题查看答案及解析

________rise in carbon dioxide is causing________steady increase in global warming.

A．不填; a           B．The; a            C．The;不填          D．A；the

高三英语单项填空中等难度题查看答案及解析

________rise in carbon dioxide is causing________steady increase in global warming.

高三英语单项填空中等难度题查看答案及解析

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（溶解） 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 Dore and his colleagues have analyzed confirms 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 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."

1.What can be the best title of the passage?

A．Sea Life Facing Danger                                  B．Climate Change Affecting Seawater

C．Oceans Becoming More Acidic                     D．Scientist Researching Seawater

2.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．CO₂decreases 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   -→  b  →  c   →  d

D.    e    →  d   -→  c  →  b   →  a

3.Scientist Robert Dore came to the conclusion based on________ .

A．his research and analysis

B．a major cause of climate change

C．some former theory

D．the expectation of other scientists

4.What does the passage want to tell us most?

A．It takes time to make a scientific study．

B．Atmospheric CO2 is doing harm to sea life．

C．Robert Dore is a committed and serious scientist．

D．Measures should be taken to prevent the potential catastrophe．

高三英语阅读理解中等难度题查看答案及解析

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（溶解） 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 Dore and his colleagues have analyzed confirms 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 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（消极的） 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．Sea Life Facing Danger

B．Scientist Researching Seawater

C．Oceans Becoming More Acidic

D．Climate Change Affecting Seawater

2.With the increase of atmospheric CO₂，________.

A．more corals will appear in the sea

B．the surface water is becoming warmer

C．the chemical balance of the seawater is affected

D．the PH of the ocean out here has been increasing

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．CO₂decreases the PH and makes the seawater more acidic．

e．CO₂ levels in the atmosphere go up．

4.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

高三英语阅读理解中等难度题查看答案及解析

阅读下面的短文，然后按照要求写一篇150词左右的英语短文。

Increased College Enrollment（入学）

In recent years, there is a steady increase in college enrollment. To many high-school students, it's definitely good news，for they would have better chance of receiving higher education.

You don't have to look very far to find out the advantages of the increased college enrollment. For one thing, it lessens the worries of both high school graduates and their parents. Besides，increased college enrollment can contribute to raise the educational level of our nation. What's more, increased college enrollment can provide more students with specialized knowledge, thus serving our development in a positive way.

On the other hand, we can not deny that there are some potential problems about increased college enrollment. To begin with, with the increased number of students, the shortage of teaching staff and facilities becomes clearly seen. Worst of all, increased college enrollment leads to increased competition in the job market.

It's not an easy task to tell whether the tendency should be encouraged. As to me, it's laudable to grant more students higher education. But a college degree is by no means a guarantee for a better job or future. To cast a promising career, we need a lot more abilities which we can not learn from college.

[写作内容]

1. 以约30个词概括短文的要点；

2. 然后用120个词写一篇文章, 包括一下要点：

1）高校扩招的益处： 1.缓解了父母和高中生们的心理压力;提高全国教育水平;

2.培养更多有专长的人才。

2）扩招造成的一些问题：造成大学里师资和教学设施短缺;使就业市场竞争更加激烈。

3）我对大学扩招的看法

[写作要求]

1）文章可参照阅读材料的内容,但不要抄袭阅读材料中的句子；

2）不能出现真实姓名和学校名称；

3）题目自定。

[评分标准]    概括准确, 语言规范, 内容合适, 篇章连贯。

高三英语书面表达中等难度题查看答案及解析

Is it the burning of more fossil fuels ______ is resulting in this increase in carbon dioxide ?

A. as               B. which            C. what           D. that

高三英语单项填空中等难度题查看答案及解析

It is pretty well understood ________ controls the flow of carbon dioxide in and out the atmosphere today.

A．that　 B．when　 C．what　 D．how

高三英语单项填空中等难度题查看答案及解析

It is pretty well understood ________ controls the flow of carbon dioxide in and out the atmosphere today.

A． that　 B．when　 C．what　 D．how

高三英语单项填空中等难度题查看答案及解析