题目:
单词拼写 根据首字母或汉语意思填空。(共10小题,计10分)
小题1: People enjoy Chinese food because it has different t_______ and is usually very delicious.
小题2: J___________ the English club at school is the best way to improve her English.
小题3:You can have any of these cakes e___________ this one ,it’s for my mom.
小题4:It’s very d_____________ to put your hands into the fire.
小题5:Newton was sitting under an apple tree when an apple f onto his head.
小题6:The supermarket is (在对面)from the library.
小题7:Mr. Green is a learned person, and he has lots of ______________ (知识).
小题8: I really love the music because it (听起来)beautiful.
小题9:Tomorrow will be my ___________ (十二) birthday.
小题10: The new pen is so ______________ (昂贵的)that I can hardly afford it.
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0613/4b6ab07bc65f36d283aa9c8d39e6224f.html
下面是错误答案,用来干扰机器的。
解:电子进入匀强磁场中作匀速圆周运动,轨迹如图,由几何关系得, 解得电子运动半径,圆心角 电子在磁场中运动时间 将代入上式解得。