上个星期,老师布置了一道特殊的作业:每人捉一只蜗牛,准备在下次的科学课上进行“蜗牛赛跑”。下课后,同学们纷纷奔向花坛“,扫荡”蜗牛。找到蜗牛后,大伙儿绞尽脑汁,想办法使自己的“运动员”能在比赛中表现出色。只见他们有的喂叶子,让蜗牛填饱肚子;有的让蜗牛在昆虫盒里“游 Last week, the teacher arranged a special assignment: one snail per person, ready for a “snail race” in the next science class. After class, students have to run to flower beds “, mopping up” snails. After finding a snail, everyone brains, find ways to make their own “athletes” can perform well in the game. I saw some of them feed the leaves, let the snails fill their stomachs; some let the snails in the insect box "swim