阅读理解Just like a smartwatch can tell its wearers how many calories they need during exercise, data from dolphin wearables can now be used to estimate how much energy dolphins use when they swim.University of Michigan engineers, together with scientists at Dolphin Quest Oahu, have led the development of wearable sensors(传感器) for marine animals to monitor movement and behavior in order to improve marine preservation efforts for these animals.Dolphins and other sea creatures are affected by human disturbances(干扰) in their habitat, including climate change, overfishing, noise pollution from shipping, construction, oil exploration and other activities. These types of disturbances can interrupt important animal behavior like hunting for fish and socializing, but measuring the disturbance is difficult be-cause the animals live under water.Devices very similar to fitness trackers used by humans, known as biologging tags, are used in biology research, but estimating the energetic cost of swimming has been challenging. Now, with the biologging tags made together with an instrument company, Michigan engineers are able to measure animal movement during thousands of strokes(划) as they swim.According to Alex Shorter, U-M assistant professor of mechanical engineering, their goal is to use tag data to estimate how many fish are eaten by dolphins during a day, and connect that to estimates of how much energy dolphins use during the movement required to catch those fish. That is important for preservation because they can then use their approach to estimate energetic costs when these animals are disturbed.In their new work, the researchers were able to develop estimates of energetic cost from tag data by working with their human and animal collaborators at Dolphin Quest Oahu. In this unique environment, the researchers were able to conduct repeatable swimming trials over a range of speeds from multiple animals to generate the data needed to estimate how much energy the animals were using as they swam. Marine animal specialists trained the dolphins to wear the tracker during lap trials and periods of free swimming.
(1)
What is the final goal of developing wearable sensors for marine animals?
A . To record the number of them.
B . To promote the protection for them.
C . To keep track of the lifestyle of them.
D . To monitor their movement and behavior.
(2)
Why is it hard to measure the disturbance of dolphins?
A . Because of their habitat.
B . Because of their strange behaviors.
C . Because of too many kinds of disturbances.
D . Because of too simple measuring equipment.
(3)
What is tag data used to do?
A . Learn about the way dolphins hunt.
B . Know the number of species of dolphins.
C . Make sure what kind of fish dolphins eat.
D . Figure out dolphin's probable amount of energetic costs.
(4)
What is the best title for the text?
A . A New Device Made by Alex Shorter
B . A Smartwatch Designed for Marine Scientists
C . New Activity Trackers for Dolphin Conservation
D . A University Working with an Instrument Company
答案: B
A
D
C