∵1<x<2∴1<x2<4
∴1<4x2<4
故答案为:(1,4)
—Shall we call for a taxi?
—OK. Let me _______ the phone number in Yellow Pages. [ ]
A. look at
B. look for
C. look up
D. look after
男性患者,11岁,左上1牙颈部冠折,已行根管治疗。
该患者拟采用全冠修复,修复方法为().
A.铸造桩核+普通金属烤瓷冠
B.铸造桩核+树脂甲冠
C.铸造桩核+全瓷冠
D.铸造桩核+贵金属烤瓷冠
E.成品桩简单桩冠