职业道德的精髓是( )。
A．客观公正
B．诚实守信
C．廉洁自律
D．坚持准则
参考答案：B
CA19-9常用于诊断（）
A.结直肠癌
B.卵巢癌
C.胃癌
D.胰腺癌
E.肝癌
Is this the reason _____ in the report for her success in the job ?
A．she explained
B．what she explained
C．how she explained
D．why she explained
