室间隔缺损解剖上分为4型:房室通道型,肌型缺损,___________和___________。
参考答案:嵴上型 、嵴下型或膜部缺损
建设项目环境影响舒缓措施中,补偿最重要的是(),因为它是整个生态环境功能所依赖的基础。
A.植被补偿
B.经济补偿
C.耕地补偿
D.技术补偿
—I was told to be here before 5:00 p.m.
—Oh, you __ __. I'm sorry for _ __ you that we've changed the plan. [ ]
A. can't; not tell
B. needn't; not telling
C. can't; not to tell
D. needn't; not tell