下列哪种类型的流行区，血吸虫病疫情最为严重：（）A.湖沼型 B.山区丘陵型 C.旱地

V. 单词拼写

64. They have ___________(成功) in keeping this animal from becoming endangered.

65. At last the _________(狼) were killed by the hunters.

66. Today’s American culture ___________(包含)many different musical styles.

67. Beckham is a ___________(有名的)football player who has fans throughout the world.

68. The child apologized to his friends _____________(真诚地). 

31．The computer software is old, ______very out of date．

A．or rather

B．rather than

C．other than

D．more than

热固化型基托树脂填胶的最佳时期为

A．橡胶期

B．黏丝期

C．稀糊期

D．面团期

E．湿砂期

胆总管扩张分五型，最常见的是（）

A.Ⅰ型：胆总管囊状或梭形扩张

B.Ⅱ型：胆总管单发憩室胆总管正常

C.Ⅲ型：胆总管下端在十二指肠壁内扩张并突入肠腔

D.Ⅳ型：多发囊肿，肝内和肝外囊肿或多发肝外囊肿

E.Ⅴ型：单发或多发肝内胆管囊肿即Caroli病

下图表示遗传病家系图。请根据具体病例分析回答：

设第Ⅱ代中仅Ⅱ-3为红绿色盲（b基因控制）患者。则图中一定患红绿色盲的个体是（）；Ⅲ-3的基因型及其概率为（）