These facts are unimportant in , but if you put them together, you may find something unusual.
A. it
B. them
C. itself
D. themselves
网友回答
A. it
B. them
C. itself
(答案→)D. themselves
解析：考察代词固定搭配。介词in oneself自身；因为本句的主语是these facts，所以使用in themselves在他们自己。句意：这些事实自身好像很不重要的，但是如果你把他们都放在一起，你会发现一些不同寻常的事情。故D正确。