如图所示,要使流过灵敏电流计的电流反向,下列措施中可行的是       （   ）

① 只将磁场反向
② 只将线圈的运动方向反向
③ 同时将磁场和线圈的运动方向反向
④ 增加磁铁的磁性或线圈匝数

    People in different 1 like to eat different food.2kind of food do people in the UK 3 to eat? Fish and fried 4 chips are very 5 in the UK. Sometimes people 6 them at home,but they usually go to a fast food 7 to buy them. They can have them 8 the restaurant or 9 them away home .Sometimes, they 10 like to eat them in a park.

小丽和小美是同班的好朋友，在期中考试的考场上，小丽顺利地答完了试卷，正要交卷时，忽然看见小美微微举起左手晃动了一下，小丽立刻心领神会，想在这关键时刻帮助朋友一把，赶紧把第五大题抄在纸上，趁老师扭身时把纸条递给小美。小丽的行为（    ）