何时做头部叮检查，诊断脑梗死阳性率较高
A．发病6小时以后B．发病12小时以后C．发病48小时以后D．发病18小时以后E．发病1周以后
参考答案：C
定期存款
―Was the doctor there when you arrived?
―Yes, but he ______ out a moment later.
A．had gone
B．has gone
C．went
D．is going
