男性，55岁，胸痛、气短，心电图：广泛前壁心肌梗死伴房室传导阻滞，血压50/40mm

—What a big storm last night!

—Yes. I was doing my homework. Suddenly, all the lights in my house _______.

A．went off

B．turned off

C．took off

D．got off

一列火车从广州开往韶关，火车每小时行82.3千米，2.7小时到达．两地之间的铁路长多少千米？（得数保留整数）

四.阅读理解（30分）

A

United Nations Climate Change Conference

The U.N. Climate Change conference opened in Copenhagen, Denmark on Dec.7th with some 15,000 delegates and observers from nearly 200 countries attending what is called the last best chance for an agreement to combat(与……战斗) global warming.

Their aim is to find common ground, including on reduction of greenhouse gas emissions, promotion and transfer of new more eco-friendly technology and the necessary funding to make this possible, especially for the less developed and poorer nations.  It also means coming up with long term vision and cooperation for the future.

Most scientists believe the warming trend is mainly caused by human activity, especially the use of fossil fuels(矿物燃料) and the cutting down of forests. Skeptics(怀疑论者) say global warming is part of a natural cycle of climate change.

In Copenhagen, experts and officials alike are putting the emphasis on what people and governments can do to cut the emission of greenhouse gases.

Scientists say a 25 to 40 percent cut in carbon-dioxide emissions is needed to control global warming. The European Union, China, and India have already pledged(保证) reductions. The United States is waiting for Congressional(国会的) approval for a proposal put forward by the Obama administration.

Barack Obama, President of the United States said, “Each of us must do what we can when we can to grow our economies without endangering our planet -- and we must all do it together. We must seize the opportunity to make Copenhagen a significant step forward in the global fight against climate change..”

Desmond Tutu, Archbishop of South Africa said, “Worldwide, we have the chance to start turning the tide of climate change, but only if all governments commit themselves to a fair, binding(有约束力的) and sustainable climate agreement in Copenhagen.”

56. From the first paragraph we can infer that___________.

people think that this conference is of no use

this conference is the last one to be held about the climate change

before this conference some countries fight against each other.

people expect a final agreement will be achieved

57. Which is NOT included in the aim of this conference?

A. To reduce the emission of the greenhouse gases.

B. To develop the agriculture and industry of the developed countries.

C. To cooperate with each other for the future.

D. To transfer new more eco-friendly technology.

58. Which statement is TRUE according to the passage?

A. The United States refuses to reduce the emission of greenhouse gases.

B. The European Union is waiting for a proposal put forward by Obama.

C. China and India have already agreed to cut carbon-dioxide emissions.

D. South Africa doesn’t think much of this conference.

59. What is Obama’s attitude according to his words?

A. Doubtful.                          B. Positive.     C. Negative.                    D. Regretful.

60. _________is the reason of global warming according to the skeptics.

A. Human activity                  B. Fossil fuels  

C. The cutting down of trees           D. Natural climate change

患儿，11个月。恶寒发热，鼻塞流清涕，喷嚏咳嗽，咽部不红，指纹浮红。其证候是（）

A.表虚

B.表热

C.表寒

D.里热

E.表实