个体身心发展具有不平衡性、顺序性、阶段性、____和互补性。
参考答案：个体差异性
— Tony, are you listening to me?
—Sorry, Sir. I ______ to figure out what you said just now.
A．was trying
B．have tried
C．tried
D．had tried
深反射包括（）。
A.角膜反射
B.桡骨骨膜反射
C.提睾反射
D.跟腱反射
E.跖反射
