关于病理性骨折病因的描述中，正确的有：（） A.骨质疏松 B.骨囊肿 C.骨转移瘤

用石墨作电极电解CuCl₂溶液，当通电一段时间后，收集到2.24L气体（标准状况）．下列有关说法正确的是（　　）

A．阳极生成的铜

B．上述电解过程中共转移0.2 mol电子

C．电解得到的Cu的物质的量为0.5mol

D．电解后溶液呈碱性

B The Beatles甲壳虫乐队
The English rock music group The Beatles gave the 1960s its characteristic musical flavor and (1) a profound influence on the course of popular music, equaled by (2) performers. The guitarists John Winston Lennon, James Paul McCartney, and George Harrison; and the drummer Ringo Starr, were all born and (3) in Liverpool. Lennon and McCartney had played together in a group called The Quarrymen. With Harrison, (4) formed their own group, The Silver Beatles, in 1959, and Starr joined them in 1962. As (5) Beatles, they developed a local following in Liverpool clubs, and their first recordings, "Love Me Do" (1962) and "Please Please Me" (1963), quickly made them Britain’s top rock group. Their early music was (6) by the American rock singers Chuck Berry and Elvis Presley, but they infused a hackneyed musical (7) with freshness, vitality, and wit.
The release of "I Want to Hold Your Hand" in 1964 (8) the beginning of the phenomenon known as"Beatlemania" in the United States. The Beatle’s first US (9) aroused a universal mob adulation. Their concerts were scenes of mass worship, and their records sold (10) the millions. Their first film, the innovative A Hard Day’s Night(1964), was received enthusiastically (11) a wide audience that included many who had never before listened to rock music．
Composing their own (12) , The Beatles established the precedent for other rock groups to play their own music．Experimenting with (13) musical forms, they produced an extraordinary (14) of songs: the childishly simple "Yellow Submarine" ; the bitter social commentary of "Eleanor Rigby" ; parodies of earlier pop styles; new electronic sounds; and compositions that were scored for cellos, violins, trumpets, and sitars, as well as for conventional guitars and drums. The (15) disbanded in 1970, after the release of their final album, Let It Be, and during the 1970s (16) individual careers, On dec.8, 1980, John Lennon (17) fatally shot outside his Manhattan apartment by Mark Chapman, a 25-year-old former mental (18) who, earlier that same day, had asked Lennon for his (19) . Lennon’s murder was universally (20) with an intensity of feeling usually inspired only by political and spiritual leaders.

男性，55岁，黄疸4个月，黄疸进行性加深，无明显腹痛。术前检查及术中探查证实为胆管下段癌，未见局部浸润及远处转移。应选择的术式为

A．肿瘤切除、胆道吻合术
B．肿瘤切除、胆管十二指肠吻合术
C．肿瘤切除、胆管空肠吻合术
D．胰十二指肠切除术
E．肿瘤段胆管置支撑管引流

影视呼唤精品，江苏不负众望。近两年江苏出品了一批弘扬主旋律的影视剧佳作：反映普通百姓追求幸福生活的《老大的幸福》，塑造诸多独特红色特工形象的《决战南京》，讴歌中共早期领导人瞿秋白革命情操和光辉精神的《秋之白华》等，给人民群众带来了文化盛宴。这启示我们，推动社会主义文化大发展大繁荣（）

A.要不断增加影视剧的数量

B.要开展群众性精神文明创建活动

C.必须加快发展中国特色社会主义文化产业

D.必须用社会主义核心价值体系引领文艺创作

卡环固位臂尖应位于基牙的（）

A．外形高点线上

B．外形高点线方

C．外形高点线龈方

D．导线的方

E．导线的龈方