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新的《国有土地上房屋征收与补偿条例》草案正在广泛征求各方意见，现请你认真阅读给定材料并联系实际，以“政府在城市房屋拆迁中的角色与作用”为题，写一篇议论文。要求：观点明确，联系实际，论述充分，结构完整，语言流畅，字数在1200字左右。

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第三篇Renewable Energy SourcesToday petroleum (石油)provides around 40% of the world’s energy needs, mostly fuelling automobiles. Coal is still used, mostly in power stations, to cover one-quarter of our energy needs, but it is the least efficient, unhealthiest and most environmentally damaging fossil fuel(矿物燃料). Natural gas reserves could fill some of the gap from oil, but reserves of that will not last into the 22nd century either. Most experts predict we will exhaust easily accessible reserves within 50 years. Less polluting renewable energy sources offer a more practical long-term energy solution. "Renewable" refers to the fact that these resources are not used faster than they can be replaced.Hydroelectric(水力发电的) power is now the most common form of renewable energy, supplying around 20% of world electricity. China’s Three Gorges Dam is the largest ever. At five times the size of the US’s Hoover Dam, its 26 turbines(涡轮机) will generate the equivalent energy of 18 coal-fired power stations. It will satisfy 3% of China’s entire electricity demand.In 2003, the first commercial power station to use tidal (潮汐的)currents in the open sea opened in Norway. It is designed like windmill (风车), but others take the form of turbines.As prices fall, wind power has become the fastest growing type of electricity generation-quadrupling (翻两番)worldwide between 1999 and 2005. Modem wind farms consist of turbines that generate electricity. Though it will be more expensive, there is more than enough wind to provide the world’s entire energy needs. Wind farms come in onshore and offshore forms. They can often end up at spots of natural beauty, and are often unpopular with residents. And turbines are not totally harmless, they can interfere with radar, alter climate and kill sea birds. Scotland is building Europe’s largest wind farm, which will power 200, 000 homes. The UK’s goal is to generate one-fifth of power from renewable sources, mainly wind, by 2020. But this may cause problems, because wind is unreliable. According to the passage, which of the following is the most polluting energy resource（）

A. Petroleum.
B. Coal.
C. Natural gas
D. Water.

某窗体中有一命令按钮，名称为Command1。要求在窗体视图中单击此命令按钮后，命令按钮上显示的文字颜色变为棕色（棕色代码为128），实现该操作的VBA语句是（）

A. that person’s health B. a scientific answer C. scientific researchers D. the genes E. the function F. the size Decoding the human genome is a challenge to______.

（15分）. 光谱定量分析的依据是什么？为什么要采用内标？简述内标法的原理。内标元素和分析线对应具备哪些条件？为什么？