Of course, hungry predators sometimes ignore the warning. They still go after the grasshopper. If that happens, (1)_______________________. It makes lots of foam. The foam tastes so bad that the predator won't do it again. (2)____________________________. They have different defenses that help them survive in the wild. Many fish live in groups or schools. That's because there is safety in numbers. At the first sign of trouble, (3)______________________. Then the school of fish makes lots of twists and turns. All that movement makes it hard for predators to see individuals in a large group.
发表于 2015-4-8 08:52
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