初中英語(yǔ)河北加拿大版學(xué)生用書 31

[by:喜歡tingclass.net，請(qǐng)把tingclass.net告訴你QQ上的5位好友，多謝支持！] [00:00.00]聽力課堂網(wǎng) Lesson 31: [00:03.50]What Lucas Says [00:06.87]Hi!I'm Lucas.I had fun with the experiments in this unit.Did you? [00:15.23]I really liked the weird mud.I put a little cornstarch into a dish. [00:22.07]Then I put a little water into the cornstarch.It looked like glue. [00:28.45]I thought it was wet It was,but it wasn't [00:34.40]When I touched it,it was dry! [00:38.56]Many foods have cornstarch in them. [00:42.63]So I guess you could eat the mud. [00:46.39]But,would you chew it or drink it?What do you think? [00:52.35]My teacher showed me the experiment with the water in the jar [00:57.91]It was a full jar of water and thin piece of cardboard. [01:04.08]I thought I knew what was going to happen:the water was going to spill. [01:10.56]I was glad she was doing it over a sink [01:15.10]But I guessed wrong.The water didn't spill.That surprised me! [01:22.08]Did you try that experiment with wet cardboard? [01:26.94]We did!Wet cardboard didn't hold the water. [01:32.60]I think my very favourite experiment was the Mobius strip [01:38.56]The Mobius strip was very easy to make,but it was very hard to understand! [01:46.21]I'm holding a Mobius strip in my hands right now,and I still don't understand it! [01:53.87]I'm glad Brian didn't try it with wet cardboard! [01:59.33]Do you remember how to make a Mobius strip? [02:04.79]Look in your Reader!

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