60岁，糖尿病患者，胸骨后疼痛1天入院，查：BP21，33/13.33kPa（160/100mmHg），心脏不大，无杂音。心电图示ST段除aVR外，余导联普遍水平压低0.2mv.首选最佳检查方法是

A．血白细胞总分数及血沉

B．血清心肌酶

C．放射性核素TC扫描

D．超声心动图

E．冠状动脉造影

翻译句子。

1. Ill contact them soon. Meantime don't tell then I'm back.

2. The doctor will see you again next week. Meantime, stay in bed and have a good rest.

3. I hope to go to medical school eventually. In the meanwhile, I'm going to study chemistry.