74．What does the underlined word “imbalance” in Paragraph 3 refer to?

　 　　 A．Unfair pay levels．

　 　　 B．Different working experience．　　

　 　　 C．Unequal opportunities．

　 　　 D．Different upbringing environment.

73．What can we learn from the passage?　　

A．Americans benefit more from working in China．

B．Chinese and American employees have the same experience．

C．Young Chinese can benefit from cross-cultural partnerships．

D．More Americans working in China cause higher jobless rate．

72．What is mainly talked about in the passage?

A．Cross-cultural conflicts．

B．Cross-cultural partnerships．

C．Multi-national companies in China．

D．Different pays for the same work．

71．More Americans go to China to take jobs because　　 　　　　.

A．they want to experience different cultures

B．Chinese workers are easier to cooperate

C．they can’t find proper jobs in America

D．the economy of China is developing rapidly

70．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．

D

As more Americans go to mainland China to take jobs，more Chinese and Americans are

working side by side．These cross-cultural partnerships，while beneficial in many ways，are

also highlighting tensions that expose differences in work experience，pay levels and communication．

In the last few years，a growing number of Americans in their 20s and 30s have been heading

to China for employment，attracted by its faster-growing economy and lower jobless rate. Their Chinese co-workers are often around the same age．But the two groups were raised differently．The Americans have had more exposure to free-market principles．“Young Americans were brought up in a commercial environment，” said Neng Zhao，28，a senior associate at Blue Oak Capital，a private firm based in Beijing．“We weren't．So the workplace is a unique learning process for my generation.”

Managers hiring workers in China appear to be paying for Western experience．Foreigners tend to earn 10 to 15 percent more than their Chinese counterparts (persons working in similar positions)，said Michael Norman，senior vice president at Sibson Consulting，an American firm．That imbalance does not go unnoticed by Chinese workers．“There is definitely the belief that Americans get paid more for the same work，”said Ting Wang，25，an associate at Wild China，a travel company based in Beijing．On the other hand，Chinese workers have a deeper　 understanding of the influences，like. Confucianism and Communism，which play a part in their country’s culture and economy．

It is important and necessary for Americans working in China to adjust，said Mr. Norman，who works on management and work force issues for multinational companies operating in Asia．

“In the West，there is such a bonus on getting things done quickly，but when you come to work in China，you need to work on listening and being more patient and understanding of local ways of doing business，”he said．

69．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

68．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．

67．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

66．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

65．What does the writer intend to tell us in the last paragraph?

　　　　 A．The fruit of a banana is more useful than its skin．

　　　　 B．The rewriting trend does more harm than good．

　　　　 C．Readers should try to read the original versions．

　　　　 D．Readers need to learn the language in the classics．

C

　　 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."