A:元谋人
B:北京人
C:山顶洞人
D:半坡人
x=2是方程ax﹣4=0的解,检验x=3是不是方程2ax﹣5=3x﹣4a的解.
世界上最高的高原是( )
— Mike _______ a job in a bank, but to our surprise, he didn't take it.
— Maybe he got another job.