六级练习2012.07.14 because, sometimes, different, schools

Rebecca949

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.

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laura6688

1.the grasshopper has backup to defense.
2.color define offer enough protection from other animals
3.schooling fish swims close together as they can get.

pxsshr

参考参考

susan.sui

1.the grasshopper has a backup to defense.
2.color doesn't offer enough protection for some other animals
3.schooling fish swims close together as they can get.

焉逢

the grasshopper has a ? to defence.
colour doesn't offer enough protection for some ? animals
schooling fish swims close together as they can get