最可能的诊断是
A．胰头癌B．急性胆囊炎C．胆囊癌D．胆总管结石E．胰腺癌
参考答案：D
she works hard _______ English and she does well _______ it.
A at, in B in, at C with, in D in , in
行政法律关系的构成要素有( )。
A．主体
B．特征
C．客体
D．内容
E．性质
