用α粒子( )轰击氮核( ),结果生成氧核( )和x粒子,则x粒子为____,生成的氧核中有____个核子.
—Linda, do you like green?
—Yes, I often __________ green clothes.
____these pop songs often____by Jessie?
下列几组动物中,体温不恒定的是( )