If the sun has enough power to warm and light the whole earth, it must have enough powerto do other things, too. Can we use the sun’s plentiful energy to supply electricity, or at least toperform. the functions which electricity or other types of power usually perform? The answer isYES. 

For example, people have for many years been using the reflected（反射的）heat of the sunto cook. Solar（太阳能的）cookers have been built with several special mirrors reflecting the sunand centering its heat on the cooking part. This equipment can be used just like a gas or electriccooker: it is more expensive to make but it does not need any fuel, and so costs nothing to use.Another possibility of using solar energy is in house heating. 

The form. of energy we use must is electricity, and every day more is needed. But electricityalso has to be made, and to make it, huge quantities of fuel are required —oil, coal, gas and soon. 

The question which worries everyone today is: how long will these fuels last? Nobodyknows for sure, but most experts think it will soon be difficult to get enough electricity fromthese sources. It is possible that the sun can make a contribution here, too. 

Solar power has already been used to produce powerful heat. In Southern France a solarfurnace（锅炉）has been built, where temperatures reach more than 3000℃. This furnace is onlyused for experiments at present, but could be used to produce steam for a power station. 

So it is possible that one day in the near future we will depend on solar furnaces and powerstations to provide our electrical needs. Or perhaps each home will be able to use solar power forlighting and heating. 

你是李明。你家附近的一家工厂经常排放浓烟，使你感到身体不适。

请用英文写一封信给工厂老板Mr. Johnson，表达你的不满，希望工厂能考虑周边居民的健康，并采取改进措施

【写作要求】正文约40个英文单词，文中不可出现你自己的真实姓名、学校等信息。

__________________________（只要你努力学习） , you will make progress.

This is the school _____________________________（你父亲曾就读过的） .

Having invited so many people, __________________________（我们得准备足够的食物） .

__________________________（尽管他只有三岁） , he can sing a lot of songs.

He missed the morning class __________________________（因为他起床晚了） .

This passage is mainly about ______.

The underlined sentence in Paragraph 4 means that the sun may provide us with ______.

One advantage of a solar cooker is that ______.

If the sun has enough power to warm and light the whole earth, it must have enough powerto do other things, too. Can we use the sun’s plentiful energy to supply electricity, or at least toperform. the functions which electricity or other types of power usually perform? The answer isYES. 

For example, people have for many years been using the reflected（反射的）heat of the sunto cook. Solar（太阳能的）cookers have been built with several special mirrors reflecting the sunand centering its heat on the cooking part. This equipment can be used just like a gas or electriccooker: it is more expensive to make but it does not need any fuel, and so costs nothing to use.Another possibility of using solar energy is in house heating. 

The form. of energy we use must is electricity, and every day more is needed. But electricityalso has to be made, and to make it, huge quantities of fuel are required —oil, coal, gas and soon. 

The question which worries everyone today is: how long will these fuels last? Nobodyknows for sure, but most experts think it will soon be difficult to get enough electricity fromthese sources. It is possible that the sun can make a contribution here, too. 

Solar power has already been used to produce powerful heat. In Southern France a solarfurnace（锅炉）has been built, where temperatures reach more than 3000℃. This furnace is onlyused for experiments at present, but could be used to produce steam for a power station. 

So it is possible that one day in the near future we will depend on solar furnaces and powerstations to provide our electrical needs. Or perhaps each home will be able to use solar power forlighting and heating.