自然界中的磁铁矿实际含铁量在45%~70%之间,并含有害杂质较少。()
参考答案:错
— Mike, our team will play against the Rockets this weekend. I'm sure we will win.
— ________![ ]
A. Good luck
B. Cheers
C. Best wish
D. Congratulations
连续铸轧