剑突下搏动常见于哪些情况？
参考答案：
剑突下搏动见于各种原因引起的右室肥大或腹主动脉瘤。
肺实质包含下述哪些成分（）
A.肺泡管
B.肺泡囊
C.小叶间隔
D.肺泡
E.肺泡壁
—Are there any school things in the store?
—______. But there are some fruit and vegetables. [ ]
A. Yes, there are
B. No, there aren't
C. Yes, they are
D. No, they aren't
