What do you do on Saturdays?[ ]

A. I like Saturday.

B. I watch TV.

C. I have P. E. class.

患者李某疑诊主动脉缩窄，超声应从哪个透声窗进行检查（）

A.肋下途径

B.胸骨右缘

C.心尖部

D.胸骨左缘

E.胸骨上窝