Choose those that are connotations of the word ocean.

A.a large body of salt water that covers approximately 70% of the earth’s surface

B.appears different shades of blue

C.often with waves and currents

D.contains various types of plant and marine animal life

E.peace

F.tranquility

G.expansiveness

H、the unknown

I、the power of nature

正确答案：peace；tranquility；expansiveness；the unknown；the power of nature