Do dolphins have conversations?

Researchers have recorded two dolphins having a conversation for the first time after the development of an underwater microphone which can _____ the animals’ different ‘voices’

• distinguish

• consider

• design

• prepare

But scientists have now shown that dolphins make changes to the volume and ________ of their clicks to form individual ‘words’

• frequency

• data

• education

• behaviour

Each click that is produced by dolphins is different from another, so we can assume that each click _______ a word of the dolphin’s spoken language

• kick

• communicate

• reply

• represent

The researchers found that Yasha and Yana could create sentences of up to five ‘words’, but the scientists have not worked out the ________yet

• option

• uniform

• puzzle

• content

Researchers also think that dolphins have developed a type of ______ in which they communicate with their flippers.

• machine

• device

• sign language

• body language

Each dolphin learnt about 300 words in all and by following the ________ correctly, they both showed an understanding of directions.

• comments

• commands

• commons

• computers

phân biệt (v)

• different

• distinguish

• difficult

• describe

đại diện (v)

• presentation

• represent

• prepare

• repeat

tần suất (n)

• frequency

• freedom

• fridge

• frog

mệnh lệnh (n)

• contain

• command

• comment

• computer