“同强盗握手，正是为了最后消灭强盗！”这是尼克松到访中国的那一天，刊登在《参考消息》头版的列宁语录；“不入虎穴，焉得虎子。”则是中国重返联合国时选登在该报同一位置的毛主席语录。对上述现象的理解不正确的是

某同学用如图1所示电路“探究并联电路中电流的特点”．

（1）在连接电路时，开关应____ ．当闭合开关试触时，发现电流表的指针偏转如图2所示，原因是____ ．

（2）用电流表分别测出电路中的A、B、C处的电流，改变电源电压，重复实验，记录数据如下表．

上面表格的设计中存在的不足之处是____ ．

（3）该同学表格数据得出实验结论：并联电路中干路电流为支路电流的2倍．这个结论一定成立吗？

答：____ （选填“一定”或“不一定”）．为了得出具有普遍意义的并联电路中电流的特点，应该____ ．

   Everybody knows vegetables and fruit are g____for people．Many people eat some fruit each day．Mr and Mrs Smith like e____ fruit very much and every day Mrs Smith goes to buy some fruit in the shop near her home. She can buy all k____ of fruits there，such as apples，pears, oranges and bananas．In different time of the year the p____ of each kind of fruit is not the same，s____  high，sometimes low. Mrs Smith usually t____  to buy cheap fruit．And b____  are Mr Smith’s favourite fruit．Mrs Smith buys bananas for him every week．But she always chooses the cheap ones.“Eating fruit can help to keep f____ ，" said Mr Smith．“It's quite d ____ from snacks．Both of them can give us energy．But snacks l____ cakes, chocolates and sweets are not good for our health at all,"