自2012年2月1日起，太湖又进入了一年一度的封湖禁渔期，在接下来长达7个月的时间内，渔船进港、渔网入库，全面停捕休渔．相关部门实施该措施的主要目的是（    ）

    There is a p____near our school. We can see many trees and flowers there. Some flowers are red, and some are y____. We can see a hill behind the park, too. At the foot of the hill we can see a r____. There are some boats on it. Children like to go there. It is Monday today. There are many young pioneers(少先队员)in the park. Some are walking and singing. S____are dancing and p____ games. Ann and h____ sister Kate are flying a k____. Tom and his brother Sam are t____a frisbee (飞盘). Their lather and mother are sitting u____ a tree. All the people are h____a good time.

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漏电保护器

    根据安全用电要求，住户家里除了要安装防止电流过大的自动空气开关外，还必须安装如图所示的漏电保护器．其示意图如图甲所示，其内部结构相当于一个自动开关，正常情况下，住户家中没有电流流向地面，即图中I₃为零，进户线中流入的电流I₁和流出的电流I₂相等，漏电保护器内部自动开关处于闭合状态．如果电路中某处发生漏电（漏电是指电流从墙体、人体、接地线或其他路径流向地面），即图中的I₃不为零，就会造成I₁和I₂不相等，当I₁和I₂的差异达到一定值，保护器内部自动开关就会立即断开．排除漏电故障后，重新合闸即可恢复供电．为确保使用安全，漏电保护器上设置了试验按钮，需要每月试按一次，如果试验按钮按下漏电保护器无动作，说明漏电保护器需要更换。