人教版高一英语下讲解08

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[00:00.00]和谐英语学习网 Part 2
[00:03.08]PRE-READING
[00:07.16]Do this section all by yourselves
[00:11.91]and look up any information you're interested in the dictionary.
[00:29.28]Curie(F.kyri),Pierre(1839-1960),and Marie(1867-1934),French physicists,
[00:52.14]husband and wife,who together with Becquerel shared a Nobel prize(1903)
[01:27.28]Mendeleyev(mendi'leief)Dmitrl lvanovich(1834-1907),Russian chemist.
[02:09.44]He constructed(1879)the periodic table of atomic weights for chemical elements.
[02:19.10]READING
[02:23.65]FRANKLIN'S FAMOUS KITE EXPERIMENT
[02:28.01]In the eighteenth century,
[02:31.54]Benjamin Franklin conducted a number of experiments
[02:36.81]in which he showed what eleetrieity is.
[02:41.49]Here is how he deseribed one of his experiments.
[02:46.64]In June 1752,I wanted to show that lightning and electricity are the same.
[02:55.18]Having realised that I could use a kite to attract lighting,
[03:01.66]I decided to do an experiment.
[03:06.02]I built a strong kite and waited for bad weather.
[03:11.48]When the first thunderstorm came,
[03:15.74]I took my condenser to a shed in the fields where I could do my experiment.
[03:22.50]My son helped me fly the kite.
[03:26.94]The kite flew high in the rainy sky,but nothing happened.
[03:32.69]I was beginning to think that the experiment would not work.
[03:38.57]Just then,I saw some of the hairs on the string stand up.
[03:44.91]The string was getting charged!
[03:48.96]I brought my finger close to the key
[03:53.33]and felt a light but very clear electric shock.
[03:58.68]Others followed even before the whole string was wet,
[04:03.85]and I was able to collect and store a great deal of electricity in the condenser.
[04:11.12]This experiment proves that lightning and electricity are the same.
[04:17.46]To do the experiment you need four things:
[04:22.22]a kite,a key,some really bad weather and a condenser,to store electricity.
[04:30.68]Most kites are made of paper,
[04:34.44]but a kite made of silk
[04:38.00]will not tear so soon in weather with rain and strong winds.
[04:44.16]Build the frame of the kite by making a small cross of two pieces of light wood.
[04:51.81]The pieces should be just long enough to reach the corners of the handkerchief.
[04:58.58]Tie the corners of the handkerchief to the points of the cross,
[05:04.46]and you will have a nice strong kite.
[05:09.50]Add a tail to the frame
[05:13.16]and tie a long string to the cross so you can control the kite.
[05:19.43]The next three steps are very important.
[05:23.87]First,fix a very sharp piece of metal,
[05:29.01]pointing a foot or more above the frame,
[05:33.45]to the top of the longer stick of the cross.
[05:38.42]Second,fasten a key to the end of the long string.
[05:44.37]Third,tie a silk ribbon to the string,just above the key.
[05:50.93]This ribbn,which must not get wet,will protect you from the electricity.
[05:57.88]Fly the kite when a thunderstorm appears to be coming on,
[06:03.44]Stand inside a door,or under some cover,
[06:09.11]so that the silk ribbon does not get wet.
[06:13.05]Take care that the string does not touch the wall or the door.
[06:18.93]When a thundercloud comes over the kite,
[06:23.19]the sharp piece of metal will pull the electricity from the cloud.
[06:29.43]The kite and the string will become charged.
[06:34.00]When the kite and the string are wet from the rain,
[06:38.76]they will conduct the electricity very well.
[06:43.41]You can collect and store the electricity
[06:47.98]in the condenser and use it for other experiments.
[11:02.15]POST-READING
[11:06.31]After reading the READING piece a second thime and doing the POST-READING,
[11:18.14]try to translate the whole piece sentence by sentence into correct Chinese.
[11:35.38]Then read the Chinese translation on page___
[11:51.73]and translate it sentence by sentence back into English,
[13:04.77]LANGUAGE study
[13:09.52]Word study
[13:14.10]While reading and doing all the exercises on page 26,
[13:19.74]try to add one sentence to each of the 18 sentenees in Word study
[13:38.31]and study carefully Word Conversion,