『新东方在线托福听力』为托福考生准备了ETS托福TPO/【学术讲座】#16听力练习：In the experiment, what did the spiders have to do to reach the rock?原文题目答案解析，TPO/【学术讲座】#16听力原文范文音频翻译。

托福TPO/【学术讲座】#16听力原文In the experiment, what did the spiders have to do to reach the rock?【新东方在线】

What this talk on Australia jumping spiders mainly about?

According to the talk, how does the Australia spiders attract the other kinds of spiders?

In the experiment, what did the spiders have to do to reach the rock?

what would happen if the spider tied to get to the rock but fail to reach the rock?

Listen to a short talk on biology.Now the Australia jumping spider as you can image got its name for its ability to leap. But it can swim too. What’s most interesting though is its ability to use try and error tactics when solving problems. Now the jumping spider attacks and eats other spiders. It’ll sit at the edge of another spider's web and attract the spider by tapping out different signals to mimic the struggles of a trapped insect and it’ll keep changing the signals till successfully lured its prey out. Well, to see if the jumping spider could apply the same problem solving technique, try and error to unfamiliar situations, scientists conducted an experiment. They field a trap full of water and then put some sand in the middle, like an island. In between the island and the edge of the trap, they put a rock. When they put the spider on the island, some tried jumping to the rock, and some tried swimming. All the spiders that successfully reached the rock either by jumping or by swimming use the same method to make it from the rock to the edge of the tree. If the spider failed to reach the rock, it was placed back on the island, but the next time they try to leave, spiders did opposite of whatever didn’t work the first time, leaping if it had swum, or swimming if it had leaped. So we see the spiders using the same try and error in crossing the water as they used in hunting.

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