TOEFL Reading: ETS-TOEFL阅读机经 - 59545E888U10634QL$

According to paragraph 6, which of the following is true of angiosperm fossils discovered in China? A. They have made it even more challenging to understand the origin of angiosperms. B. They contain flowers that appear modern for the age of the fossils. C. They convinced most botanists that angiosperms did not originate in northern Asia. D. They are not as old as angiosperm fossils discovered in the South Pacific.