诊断前置胎盘较安全可靠的方法是( )
A． * * 检查B．肛门检查C．B型超声检查D．放射线检查E．化验检查
参考答案：C
What’s the use of keeping the secret ______ everyone has already known it?
A．as though
B．now that
C．before long
D．in case
翻译：君何患焉？若阙地及泉，隧而相见，其谁曰不然？
