以下哪项不属于左冠状动脉（）
A.窦房结动脉
B.对角支
C.穿支
D.前降支
E.左旋支
参考答案：A
— Why do you look so upset?
— Well, there are so many problems ______.[ ]
A. remaining to settle
B. remained setting
C. remaining to be settled
D. remained to be settled
1875年，收复新疆，维护了国家领土完整的是（）
