选C！意思是几乎没有什么乐趣能比得上拯救处于危难中的人了。
that引导同位语从句，指拯救危难中的人这件事。
C
是代词,指the pleasure of saving someone in danger
没有什么乐趣比得上救助临危的人
这种用法是十分常见的如:
The weather in Beijing is colder than that of Shanghai.
The number of students in Class One is larger than that of Class Two.
those也可以特指但修饰复数,如:
The gifts given by him is more expensive than those given by her.
本题the pleasure of saving someone in danger应是单数.
选d
those指代前文中提到的pleasures
选C
that代指the pleasure
D吧
内容全部来源于网络收集，如有侵权，请联系网站删除：QQ：24596024