缓解急性心肌梗死疼痛最有效的药物是舌下含服硝酸甘油。
参考答案：错
1千克苹果的价钱是3.6元，1千克橘子的价钱是2.4元．小柯买了10千克苹果，10千克橘子，共花了多少元？
It was not until 7 o’clock in the evening________to an end.
A．did the meeting come
B．that the meeting came
C．when the meeting came
D．and the meeting came
