These animals are all used to their environment; ________ they have learned how to live successfully in their habitat．

1. A.
   for example
2. B.
   what’s more
3. C.
   that is
4. D.
   or rather

These animals are all used to their environment,______, they have learned how to live successfully in their habitat．

1. A.
   however
2. B.
   for instance
3. C.
   what’s more
4. D.
   or rather

These animals are all used to their environment; ______, they have learned how to live successfully in their habitat.

A. for example　　　　　　　　　　 B.what’s more　　　　　　  C.that is　　　　　　　　　　   D.or rather

A. for example　　　　　　　　　　 B.what’s more　　　　　　  C.that is　　　　　　　　　　   D.or rather