兔出血症的特征性病理变化是各脏器广泛（）。
A.充血和肿大
B.出血和坏死
C.充血和坏死
D.充血和出血
参考答案：D
已知方程2x-y=1，用含x的代数式表示y，得______．
________ with others easily will be harmful to your health, so keep a goodtempered character all the time please. [ ]
A. To be annoyed
B. Being annoyed
C. To be pleased
D. Being satisfied
