W:Li Ming is leaving soon. Let's have a goodbye ____for him.
M:OK. Will we ____him?
W:No.
M:When is the party?
W:Next Sunday.
M:What time does it ____?
W:At 7:00 in the evening. Don't be ____!
M:OK. I will be ____.
1919年卢瑟福通过如图所示的实验装置,第一次完成了原子核的人工转变,并由此发现____.图中A为放射源发出的____粒子,B为____气.
went,by,there,we,plane(.)
____
任意一对对应点与旋转中心所成的角都是( )