为确诊，哪项检查是最有意义的：
A．血CA125B．B超C．腹水细胞学检查D．MRIE．诊断性刮宫
参考答案：A
Yesterday, I came across my former classmate, but his name ______ me, which made me embarrassed.
A．forgot
B．missed
C．escaped
D．reminded
现行的《地表水环境质量标准》（GB3838-2002）中，Ⅲ类水的COD标准限值为（）。
A.≤10mg/L
B.≤15mg／L
C.≤20mg／L
D.≤30mg／L
