TOEFL Reading: ETS-TOEFL阅读机经 - CSP9JB751FOG13SGL$

According to paragraph 1, which of the following is true of the organisms that become fruit flies? A. They feed during the pupal stage. B. They become winged insects several days after the larvae hatch from eggs. C. They remain in the larval stage longer than they remain in the pupal stage. D. They need to be protected during the larval stage in order to reach the pupal stage.