[单项选择]下列各项，属于肿瘤的是
A. 错构瘤
B. 动脉瘤
C. 室壁瘤
D. 骨软骨瘤

Few creatures on earth are as cute as the black lion tamarin, and few have as dramatic a story line. Pug-nosed and diminutive, with a comic fringe of hair, these monkeys dwell in trees in small tracts of forest in southeastern Brazil. Or they did until 1905, when they were declared extinct. No one saw a black lion tamarin again in the wild until 1970. Later, in the 1990s, some Brazilian researchers turned up a small set of isolated, inbred populations scattered over a wide region. Since that time, they have been engineering tamarin migration, doing everything they can to save the world’s most distinctive primates.
Although they are no larger than house cats, tamarins have brains big for their size and a family life organized like our own. They live in groups anchored by an adult male andadult female, along with their offspring. When a mother bears young, she usually produces twins, and although members of the group share in their upbringing, it is most often the fat
A. improve chances for tamarins to meet and mate
B. connect once separated habitats for the sake of research
C. make use of some lumber cut down
D. both A and C

案例四： 一般资料：求助者，女性，61岁，退休工人。 案例介绍：求助者是孤寡老人，最近一段时间经常打电话报警说自己夜间听到窗外有人密谋杀害自己并抢夺自己的巨额财产。民警经蹲守，未发现可疑人员。而在民警蹲守的同一时刻，求助者还在打电话报警说听到窗外密谋杀害她的声音。现在求助者白天不敢自己出门，说出门之后就会被街上所有的人指指点点，或者被人跟踪，那些在她家周围卖菜的、卖报纸的、收废品的人都是经过乔装改扮来监视她的人。警察怀疑求助者 精神出了问题，但求助者坚持认为自己没病。在警察带领下来到咨询室。 心理咨询师观察了解到的情况：求助者头发没有经过梳理，脸上和身上比较脏，先是用怀疑的眼光打量咨询师，感觉咨询师态度温和，便拿起桌上的笔，在一张废纸的背面写下“五千万”三个字并交给咨询师，说咨询师是个有前途的人，这五千万送给他去发展事业。警察反映求助者近来生活比较懒散，不收拾屋子。