Why are hobbies today more important than ever？
A. We need something to relax.
B. We have more free time.
C. We realize their importance.
D. We can get pleasure from hobbies.
查看答案
One of the hobbies the cavemen had was
A. hunting.
B. fighting.
C. drawing.
D. riding.
The word "prompted" underlined in Paragraph 3 means______.
A. stimulated
B. attracted
C. annoyed
D. shocked
Which of the following does the writer explain？
A. Neurotoxins.
B. Microscopic organisms.
C. Predators.
D. Fish walks.
It is implied in the passage that______.
A. many scientists had known dinoflagellate before 1988
B. there had been no such organisms before 1988
C. many scientists were in doubt about the nature of the organism in 1988
D. no scientists knew anything about the organism in 1988
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