关节活动度测量被允许的误差为（）
A.0°～2°
B.1°～3°
C.2°～4°
D.3°～5°
E.4°～6°
参考答案：D
—Has your former classmate come back from America?
—Yes, he _____ there for 8 years.
A．has stayed
B．stays
C．stayed
D．had stayed
设M=47.6554，函数ROUND(INT(M)+M,2)的值是_________________。
