试在图○中填入表示电压表或电流表的字母“V”或“A”，同时在其两侧标上代表该表两个接线柱的“+”，“﹣”号．

根据短文内容和所给汉语提示，写出短文空白处各单词的正确形式,每空限填一词。
   My friend Nancy is ____(15) years old. She is a clever girl in my class. She comes from  ____ (日本).But she likes China very much. Now she ____  (居住) in Shanghai with her parents. Her house is not in the  ____(中心)of the city but she enjoys it. There ____( 有 )a river through her neighborhood.____ (在对面) from her building is an old park.____ （如果) she is tired, she can ____(散步 ) in it to relax herself. She says she wants to be a ____ (女警察) though sometimes it is kind of ____ (危险的)

如图示，质量相等的两个滑块位于光滑水平桌面上，其中弹簧两端分别与静止的滑块N和挡板P相连接，弹簧与挡板的质量均不计；滑块M以初速度v₀向右运动，它与档板P碰撞（不粘连）后开始压缩弹簧，最后，滑块N以速度v₀向右运动．在此过程中（   ）

面对不断更新换代的手机，甲认为：我要追求新体验，总是尽量购买新款手机；乙认为：手机能用我就不换新的，省下的钱可以买书看．下列对此评价正确的是（　　）