题目内容

下列哪种麻醉药与吗啡联用出现拮抗作用

A. 芬太尼
B. 哌替啶
C. 普鲁卡因
D. 利多卡因
E. 喷他唑辛

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金合金和铜合金的常用焊媒是

A. 硼酸
B. 硼砂
C. 硫酸钠
D. SiO2
E. 磷酸锌液

矫治过程中弹性橡皮圈不可用于

A. 颌内牵引
B. 颌间牵引
C. 垂直牵引
D. 直接套在牙冠上关闭间隙
E. 口外牵引

义齿蜡型分装法的要求,以下哪项不正确

A. 人工牙翻至上半盒内
B. 人工牙包埋在下半盒内
C. 义齿基托蜡型翻至上半盒内
D. 模型包埋在下半盒内
E. 去除卡环内的石膏基牙

The house and carriage is a thing of the past. but love and marriage are still with us and still closely interrelated. Most American marriages, (21) first marriages uniting young people, are the result of mutual attraction and affection (22) than practical considerations.In the United States, parents do not (23) marriages for their children. Teenagers begin dating in high school and usually find mates through their own academic and social (24) (25) young people feel free to choose their friends from (26) groups, most choose a mate of similar (27) This is due in part to parental guidance. Parents cannot (28) spouses (配偶) for their children, but they can usually (29) choices by voicing disapproval of someone they consider unsuitable.(30) , marriages between members of different groups (interclass, interfaith, and interracial marriages) are (31) , probably because of the greater mobility of today’s youth and the fact that they are (32) by fewer prejudices than their parents. Many young people leave their hometowns to attend college, serve in the armed forces, (33) pursue a career in a bigger city.Once away from home and family, they are more (34) to date and marry outside their own social group.In mobile American society, interclass marriages are neither (35) nor astonishing. Interfaith marriages are (36) the rise, especially between Protestants (基督教徒) and Catholics ( 天主徒). On the other hand, interracial marriages are still very (37) . It can be difficult for interracial couples to find a place to live, maintain friendships, and (38) a family. Marriages between people of different national (39) (but the same race and’ religion) have been commonplace here (40) colonial times. 33().

A. but
B. or
C. so
D. otherwise

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