在连接电路时，如果发现有连接错误，很多同学习惯于将导线全部拆除，重新连接。其实，有时只要拆除部分有连接错误的导线，并重新正确连接就能解决问题。如图所示是小明连接的电路。
（1） 如果合上开关，将出现 _____ （选填“断路”或“短路”）的现象。除了两只灯都不亮以外，还会造成 的不良后果。
（2 ） 观察图所示的实物电路，在下面两种方案中任选一种方案，使电路成为合理的电路。
①在图中只拆除一根导线，使两灯成为串联的电路。在要拆除的那根线上画“×”。
② 在图中只改动一根导线的一端，使两灯成为并联的电路。在被改动的导线上画“×”，然后画出改动后的导线。
（1）短路；损坏电流表(或损坏电源)
（2）电路图“略”
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| Water is the "life blood" of our earth. Like air and sunshine, it is very important 1 living things. Without water, there can be 2 life on the earth. All animals and plants need water. Man also needs water. We need water to drink, to cook and to clean 3 . It even 4 the greater part of our bodies. Water is almost everywhere. Even in the 5 places of the world, there is water in the air. However, we can drink not seawater but fresh water. To make things even 6 ,people often 7 to keep the water clean. They throw rubbish into rivers, lakes or seas. So not all the fresh water is 8 for us to drink. We're short 9 water. Something must be 10 to stop this. | ||||
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