TOEFL Reading: ETS-TOEFL阅读机经 - 6K716VW6KSX2X465L$

Paragraph 1 suggests which of the following are the seeds of asters in temperate climate? A. They mature a short time after the plant blooms. B. They begin to develop in autumn and mature in winter. C. They were more plentiful than those of oaks or lettuces. D. They are not designed to survive temperate climate.