![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
What is the main purpose of the text?
A.
To demonstrate how clever hummingbirds are.
B.
To point out differences between hummingbirds and insects.
C.
To answer the question about whether a hummingbird flies more like other birds or more like insects.
D.
To point out that evolution can produce similar engineering solutions in hugely distant animal groups.