阅读下面短文，从短文后所给的五个选项中选出能填入短文空白处的最佳选项， 使短文通顺、连贯，意思完整。

The lights made by fireflies are probably one of the most magical things to see on a summer night. 【小题1】

According to National Geographic, fireflies have light organs under their abdomens (腹部). 【小题2】

Different species have their own unique flash patterns (闪光规律), just like humans have different languages. They use these flash patterns to find other members of their group.

【小题3】 The males fly around while turning their lights on and off, hoping to get the attention of a female. They try to flash very quickly. 【小题4】 Young fireflies also use the light to scare away their enemies.

If you haven’t seen many fireflies lately, you are not alone. 【小题5】 It’s most likely due to light pollution, pesticide use and habitat destruction (栖息地破坏). Luckily, Chinese scientists recently found three new firefly species in Yunnan. Yunnan might have the right environment for these magical bugs to live in, according to Science and Technology Daily.

A．Fireflies mainly use the light to attract mates.

B．Have you ever wondered how fireflies make this light?

C．That’s because the faster males flash, the more attractive they are to females.

D．They take in oxygen and combine (使……结合) it with special cells to produce light.

E．The number of fireflies may be dropping.