托福考试

【分析解答题】Passive locomotion: move ...in order to obtain sources for survival...without using energyE、g: spider move:　　目的：spider少的地方——compete for insects　　方式：jumping, walking and by the winD、　　描述：climb to a high point such as a tree...produce silk...　　Slight...wind 吹走 net and the spider attached to it　　Stop when the wind stop or the net is broken.
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