Not until I began to work ________ how m_爱下问搜题

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问题选择题

Not until I began to work ________ how much time I had wasted. [ ]

A. did I realize

B. didn't I realize

C. hadn't I realized

D. had I realized

答案

答案：A

多项选择题

上颌骨阻力中心的位置，下列描述何者正确（）

A.正一中矢状面上

B.梨状孔下缘

C.梨状孔上缘

D.第二双间牙和第一磨牙之间

E.第一磨牙和第二磨牙之间

单项选择题

患者需进一步检查的项目为

A．血糖和血脂

B．DSA

C．脑血管超声检查(TC

D．头颅CT

E．脑电图