替牙牙合时期是指（）
A.2.5～4.0岁
B.4.0～6.0岁
C.6.0～7.0岁
D.8.0～9.0岁
E.6.0～12.0岁
参考答案：E
His remarks ________ me in my opinion that he was a very considerate boy.
A．concerned
B．contacted
C．confirmed
D．considered
下面哪一项不是硝酸甘油的不良反应
A．头颈部皮肤潮红
B．头痛
C．体位性低血压及晕厥
D．发绀
E．水肿
