Dolphins seem to talk to each other about any of the following EXCEPT ______.
A. their age
B. audio link
C. food sources
D. their emotional state
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Which of the following airlines provides the lowest price to Hong Kong？
Air New Zealand.
B. Cathy Pacific Airline.
China Eastern Airline.
D. Atlantic Airline.
Why is it challenging to interpret "dolphins speak"？
A. Because playing and fighting are part of dolphins' life.
Because dolphins like to talk about their language.
C. Because dolphins' language heavily relies on their actions.
D. Because tasty fish are difficult for dolphins to catch.
The ATMs enable bank customers to access their money 24 hours a day and seven days a week
A. wherever
B. whenever
C. however
D. whatever
Which of the following is NOT true about the silicon chips in trial？
A. They are as tiny as a grain of rice.
B. They will send out radio signals.
C. They will be developed for medical uses.
D. They function like identity cards.
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