Задание №21190 ЕГЭ по Английскому языку

Goldfish Don’t Have a Three Second Memory

In fact, goldfish actually have very good memories for fish. They can be trained to respond various ways 30                           certain colors of light; different kinds of music; and other sensory cues. Not only that, but they seem to be able to remember things they are taught as much as a year 31                          . Researchers have successfully taught goldfish to play fetch, push levers, do the limbo, and even play soccer. If they are fed around the 32                           time of day, they also remember that and will anticipate the feeding leading up to that time, which implies they have a very good sense of time.

Goldfish also have been shown to be able to recognize their masters and even pick their favorites. Around certain people the goldfish is very 33                           with, they will often be much more active when they see the person and even sometimes stop considering the person any sort of threat, including if that person sticks their hand in the water and tries to touch them. Around strangers, on the 34                           hand, the goldfish will often hide.

In one experiment, researchers trained young goldfish to associate a certain sound with feeding time. They then released these fish into the sea. About half a year later, when the fish were fully grown, the researchers broadcast the sound over a loudspeaker and the fish swam from wherever they were in the sea, back to where they were released. This has been proposed as a method to cut 35                           the cost of raising fish for consumption. Teach them to come when they are young and then release them into the ocean and lakes to grow to adulthood naturally. Better for the environment; less cruel 36                           the fish.