L3：
Lecture 3
第一题
What is the main point of the lecture?
AFish are particularly good at detecting nearby predators.
BSeveral fish species have learned to release odors to deter predators.
CFish can learn a survival strategy by observing other fish species.
DFish can replicate the behavior of other fish only while observing them.
第二题
What point does the professor make about fish when she talks about feeding behavior? AFeeding behavior is surprisingly similar among coral-reef fish species.
BMost fish change their feeding speed throughout the day.
CIndividual learning is more common than social learning is.
DGaining knowledge of predators is more important than learning what to eat.
第三题
What is the likely reason that researchers included two kinds of naive fish in their study?
ATo observe the effects of competition between the two fish species
BTo find out whether social learning occurs between unrelated fish species
CTo confirm that different species of fish learn at the same rate
DTo record a range of reactions to a predator’s odor
第四题
According to the professor, how do fish typically react to predators?
ABy becoming less active
BBy releasing a different odor
CBy swimming away quickly
DBy searching for a hiding place
第五题
What does the professor imply about complex ecosystems?
AA large amount of behavioral information is available in those ecosystems.
BThe majority of animals in those ecosystems are genetically related.
CSurprisingly few predators are attracted to those ecosystems.
DThe size of those ecosystems is generally becoming smaller.
第六题
What can be inferred about the professor when she mentions fish observing a behavior only once?
AShe hopes the experiment will be repeated with other naive species.
BShe finds it surprising that fish learned to imitate a behavior quickly.
CShe is not convinced that the fish in the study were responding to what they observed.
DShe believes the fish behaved differently in the study than they would have in the ocean.
