下面一组图像主要显示()
A．正常的右侧冠状动脉
B．正常的左前降支
C．右侧冠状动脉钙化
D．左前降支钙化
E．左旋支钙化
参考答案：A
After the big earthquake in Chile, there were about 300 aftershocks in the nearby area, ______ over 200 were quite damaging.
A．which
B．of which
C．during which
D．whose
