Question

    If you’re DIY-minded, you can build your own solar power system. In some cases, you can even build your own solar panels (电池板), although the amount that you can effectively DIY home solar depends on how much you want to power. Making your own solar panel is a time-consuming process and requires some electrical skills. However, it can also be very rewarding-learning to build your own panel is a great way to understand how solarelectricity is generated.

Before you can build your own solar panels, you first need to understand how solar cells generate electricity. Once you’ve bought individual solar cells (they can be purchased online), the basic process for building your own solar panel goes like this: Prepare the backing for your panel. Many DIY solar panel builders prefer to use a wooden board as the base for their solar cell. You’ll need to drill holes in the board so that the wires for each cell can pass through. Wire your solar cells together. This requires some experience with electrical work. Use a soldering iron (烙铁) to attach wire to the solar cells and then link each of the cells together. Attach cells to your backing. If possible, attach each solar cell to the backing individually. This makes it easier to replace a single cell in the event that becomes damaged or is not operating properly.

At this point you have a functional solar panel that can produce electricity when the sun shines. However, a solar panel by itself is not useful. If you are trying to generate electricity to power devices in your home, you need to pair your panel with an inverter (换流器) that will turn direct current (DC) power from the sun into the alternating current (AC) power used in most modern electronic devices.

1.What does the author think of building DIY solar panel in the first paragraph?

A.It is easy. B.It is necessary. C.It is common D.It is worthwhile

2.What’s the first step of building your own solar panels?

A.Master the advanced knowledge- of management.

B.Buy individual solar cells.

C.Prepare the backing for your panel.

D.Drill holes in the wooden board.

3.Why are solar cells connected to the wooden board separately?

A.To produce more power.

B.To substitute damaged cells easily.

C.To attach cells to the backing tightly.

D.To pass through the wooden board easily.

4.What can be inferred from the text?

A.People with electrical skills have advantages over those without in DIY solar panels.

B.A functional solar panel can give power to your home devices directly.

C.How to pair an inverter depends on how much you want to power.

D.a wooden board is a must for your own solar panels.

Answer

1.D

2.B

3.B

4.A

【解析】

这是一篇说明文。自己制作太阳能电池板是一个耗时的过程，需要一些电工技能。然而，它也可以是非常有益的-学会建造自己的面板是一个了解太阳能是如何发电的很棒的方式。接着文章说明了自制太阳能电池板需要的材料和制作方法。

1.推理判断题。根据文章第一段最后一句 However, it can also be very rewarding-learning to build your own panel, which is a great way to understand how electricity is generated 可知，自己制作太阳能电池板是非常值得且有教育意义的，你可以借此理解发电原理。故D项符合题意。故正确答案为D。

2.细节理解题。根据文章第二段第二句中的 Once you've bought individual solar cells (they can be purchased online), the basic process for building your own solar panel goes like this 可知，购买一些单个的光伏电池是制作太阳能板的第一步。故正确答案为B。

3.细节理解题。根据文章第二段最后两句 If possible, attach each solar cell to the backing individually. This makes it easier to replace a single cell in the event that becomes damaged or is not operating properly 可知，将每个光伏电池单独连接到背板上，这样可以更轻松地替换单个损坏的电池。故正确答案为B。

4.推理判断题。根据文章第二段第六句 This requires some experience for electrical work 可知，自制太阳能板需要一些电工经验。故拥有电工技能的人在自制太阳能板时更占优势，A项正确。B项，“运作的太阳能板可以直接给家电供电”。根据文章最后一段最后一句 If you are trying to generate electricity to power devices in your home, you need to pair your panel with inverter(转换器) that will turn direct current(DC) power from the sun into alternating current(AC) power used in most electronic devices 可知，若要用太阳能板给电器供电，需要配置转换器将产生的直流电转化为大多数电器可以使用的交流电，故B项错误。C项，“如何配置转换器取决于你想要发多少电”。文中只提及转换器用于将直流电转换成交流电，但未提及如何配置转换器。故C项错误。D项，“自制太阳能板时必须使用木板”。根据文章第二段第三句 Many DIY solar panel builders prefer to use a wooden board as the base for their solar cells 可知，很多人在自制太阳能板时偏好使用木板，但并非必须要使用木板。故D项错误。故正确答案为A。