`29,` C

- Dẫn chứng:

+) Sylvia Earle is an underwater explorer and marine biologist who was born in the USA in 1935 . She became interested in the world's oceans from an early age . As a child , she liked to stand on the beach for hours and look at the sea , wondering what it must be like under the surface.

`30,` C

- motivated = inspired : có động lực 

`31,` D

- Dẫn chứng : The research they carried out showed the damage that pollution was causing to marine life , and especially to coral reefs. 

`32,` B 

- Dẫn chứng : Although she no longer eats seafood herself , she realizes the importance it plays in our diets , it would be wrong to tell people they should stop eating fish from the seas , she says.

`33,` A

- Dẫn chứng:

+) Sylvia Earle is an underwater explorer and marine biologist who was born in the USA in 1935 . She became interested in the world's oceans from an early age 

+) The research they carried out show the damage that pollution was causing to marine life , and especially to coral reefs.