The American Navy experiment measured the ocean with

• A、heat

• B、light

• C、rope

• D、sound

Task 1

Paragraph➊

Paragraph❷:

Paragraph❸:

Paragraph❹:

 

A. The first step of research

B.The true nature of research

C. Combining research with education

D. Finding solutions to research questions

E. Trying not to be discouraged by failure

Ocean scientists are interested in

• A、drawing maps of the sea floor

• B、building underwater ships

• C、sailing the world's oceans

• D、saving lives in the ocean