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题库 / Prep2007E1-SC-34
Hundreds of species of fish generate and discharge electric currents, in bursts or as steady electric fields around their bodies, using their power either to find and attack prey, to defend themselves, or also for communicating and navigating.
either to find and attack prey, to defend themselves, or also for communicating and navigating
either for finding and attacking prey, defend themselves, or for communication and navigation
to find and attack prey, for defense, or communication and navigation
for finding and attacking prey, to defend themselves, or also for communication and navigation
to find and attack prey, to defend themselves, or to communicate and navigate
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(E) 正确, to find… to defend…or to communicate…形式对应，三者并列平行 理解错了
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