急性化脓性颌骨骨髓炎由发病到死骨形成约需()
A.1-2周
B..2-3周
C.3-4周
D.4-5周
E.5-6周
参考答案:E
下列各组词语中读音和书写都准确的一项是( )(2分)
A.消声匿迹(xiāo)嗤笑(chī)
B.明眸善睐 (lái)惬意(qiè)
C.揠苗助长(yà)栈桥(zhàn)
D.跌宕起伏(dàng) 拾级(shí)
With just 2 years _____, the London Olympic organizers have promised to deliver an excellent ceremony. [ ]
A. going
B. to go
C. gone
D. go