Multiple MatchingExercise 24 of 70

The acrobatic acts of dolphins have fascinated humans, but scientists are now more interested in how dolphins think than in what they can do. When the head researcher presses her palms together over her head, the signal to innovate, and then puts her fists together, the sign for tandem, she has instructed a pair of…

• Which text mentions a frustration expressed by some?
• Which text mentions a comparison between dolphins and unknown entities?