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TOEFL Directory > TOEFL writing > answers for TOEFL reading unit two passage 14
answers for TOEFL reading unit two passage 14
144. D. "Birds have an extremely sophisticated visual communication system."
145.D
146.B. "When the flock changes direction in flight, the birds watch those ahead of them and time their reactions to create a wave of movement that occurs too rapidly for the human eye to catch what is happening."
147. B. "But if one spots danger and does an emergency take off, the others interpret the absence of intention movements as an alarm signal, and the whole flock rises into the air. "
148.A
149.D
150.B "Geese are quick to notice a member of their flock standing with its neck stretched after spotting possible danger."
151.C
152.C. " Most commonly, displays are used to advertise a territory, repel a rival, and attract a mate."
153. C
154. "When the flock changes direction in flight, the birds watch those ahead of them and time their reactions to create a wave of movement that occurs too rapidly for the human eye to catch what is happening."
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