(单选题)

That Africa and South America were once joined can be deduced from the fact that ______.

A.the two continents are still moving in opposite directions

B.they have been found to share certain geological features

C.the African plates has been stable for 30 million years

D.over 100 hot spots are scattered all around the globe

参考答案：B

参考解析：

细节理解题。根据第二段的第三句“The complementary coastlines and certain geological features that seem to span the ocean are reminders of where the two continents were once joined”可知，非洲和南美洲曾经连接在一起的证据有两个——海岸线所具有的互补的特征及某些地质特点，故选B。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语