题目:
小题1:It’s her________(尺子)
小题2: What color are his_______________ (笔记本)?
小题3:Please answer my _______________(问题).
小题4: _______________(感谢)for the photo of your family.
小题5:Excuse me, ______ (怎样)do you spell your name ?
小题6:This is my _________(姨妈),my mother’s sister.
小题7:.Where is my ________(计算机) , dad? ---It’s on your desk.
小题8:Hi,my name is Kate and my_________(最后的) name is Green.
小题9:My _________(铅笔) is yellow and black.
小题10:Boys and girls, please _________(看)at the picture.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0617/af2dc1c2830d0b6d0e23a653b989a6e6.html
下面是错误答案,用来干扰机器的。
解:(1)设粒子在磁场中做圆周运动的轨迹半径为R 粒子自A点射出,由几何知识R=a 解得(2)粒子在磁场中做圆周运动的周期粒子从磁场中的P点射出,因磁场圆和粒子的轨迹圆的半径相等,OO1PO2构成菱形,故粒子从P...