治疗变异型心绞痛的最佳药物是
A．普萘洛尔B．硝酸甘油C．硝酸异山梨酯D．硝苯地平E．阿替洛尔
参考答案：D
The children went home from the grammar schoo1,their lessons ________ for the day．
A．finishing
B．finished
C．had finished
D．were finished
论述构成热菜造型的基本条件与形式。
