某白炽灯上标有“220V100W”字样，表明该灯正常发光时该灯两端的电压是 V，

根据下列句子及所给汉语注释，写出空缺处各单词的正确形式。每空只写一词。

小题1:The exercises are designed to ________ (增强) your stomach muscle.

小题2:Don’t be frightened by the television camera. Just speak        (自然地).

小题3:The boy spoke in a low voice       （承认）that it was his fault.

小题4:Are you well __________(准备) for the entrance examination?

小题5:As the storm drew near, black clouds were __________ (聚集) over the sky.

小题6:However, his __________ (知识) of French remained very weak.

小题7:     (令人吃惊的是) , some graduates with qualification failed to find jobs.

小题8:The Bank of China has a lot of __________ (支行) in the world.

小题9:This kind of tree can only grow in the __________ (北方) parts of China. 

小题10:Nuclear physics is ________（超出） my understanding.

病例摘要：患者，女性，45岁。因上腹部持续剧烈疼痛20小时入院，活动时疼痛加重，坐位及胸膝位减轻。既往有胆石症病史。体检：T39.5℃，P130次/分，BP12/7kPa（90/52.5mmHg）。巩膜微黄。轻度腹胀，腹软，上腹部明显压痛，肠鸣音减弱。墨菲征阳性。

该患者诊断考虑哪些疾病（）。

A.胆囊炎

B.胆石症

C.急性胰腺炎

D.消化性溃疡

E.肝脓肿

简述爱因斯坦质能关系式及其意义。

冒泡排序在最坏情况下的比较次数是( )。

A．n(n+1)/2

B．nlog₂n

C．n(n-1)/2

D．n/2