人教版高一英语下讲解07

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[00:00.00]和谐英语学习网 Unit 16  Scientists at work
[00:04.49]Part 1
[00:07.34]WARMING UP
[01:34.41]biology=scientific study of the life and structure of plants and animals
[01:52.98]the biology of bacteria biologist
[02:04.94]biological washing powder
[02:28.30]LISTENING
[02:34.25]1. Listen to the tape.Tick the things that Mrs Zhu talks about.
[04:46.30]2.Listen carfully and answer the following questions.
[04:52.96]1 What is the most important thing students should remember?
[05:01.43]Safety comes first.
[05:05.97]2 What is the first thing students should do when they come into the lab?
[05:19.53]They should not come into the lab without their teacher.
[05:32.98]3 Why should students be careful smelling from bottles?
[05:43.46]Beeause gases can be very dangerous.
[05:55.00]4 What is to be done when anything gets into your eyes?
[06:15.35]Wash them at once with a lot of water.
[06:33.69]5 What should students do before leaving the lab?
[06:47.07]Students should clear everything away and leave the lab neat and clean.
[06:53.41]They should turn off the lights and close the windows before they leave.
[07:12.77]SPEAKING
[07:18.33]The work of scientists is often discussed.
[07:24.19]Work in pairs and discuss the advantages
[07:29.54]and disadvantages of the following sclentific discoveries and applications.
[07:36.02]A:Shanghai is the first city in the world to build a high-speed maglev train,
[07:48.17]from the city to Pudong Airport.
[07:59.03]B:Well,in my opinion,it's a waste of money.
[08:09.30]It's much too expensive.
[08:13.45]A:It's expensive,but very fast.
[08:20.82]In the future,people can travel from Beijing to Shanghai in a few hours.
[08:35.19]B:Flying is just as fast.
[08:42.16]The money would be better spent building more roads
[08:47.91]or railways in other parts of China.
[08:59.87]A:More roads and trains mean more pollution.
[09:09.75]This new train has no wheels and no engine.
[09:18.58]It's fast and clean and it doesn't make any noise,as planes do.
[09:37.20]We should make more use of this new technology.
[09:49.35]After doing the exercise on page 23,try to act out the conversations you've made.