高一英語牛津版(下）chapter three

[00:06.09]Simon like exciting films,but Debbie prefers nature films. [00:14.52]One day, she said,'Do you want to watch this video,Simon? [00:21.16]It's about strange living things.they can be very or huge! [00:29.31]Some have lots of bodyguards to protect them. [00:34.87]Some live for thousands of years.And some are killers and kidnappers! [00:44.33]Simon said,'It sounds really exciting!' [00:49.89]But he had a surprise when he watched it. [00:54.57]Here are some excerpts from it.Tgw Weird World of Plants [01:02.51]This is the Venus Fly Trap. [01:06.48]It has two special leaves,and each leaf has several hairs in the middle. [01:13.14]If an insect touches one of these the leaves start to shut together. [01:19.80]The insect often tries to run away. [01:24.45]But the plant moves more quickly than the insect. [01:29.73]The victim is trapped in a little prison. [01:33.68]Soon it dies, and the plant gradually absorbs it. [01:39.11]Plants live the longest of all things on Earth. [01:43.55]A Bristlecone Pine in California is 4,700 years old [01:50.39]and is still alive older than any written history. [01:55.96]Plants can be as small as one cell,like the millions of tiny plants in the seas. [02:02.72]One of the smallest is the Lichen plant which grows on stones. [02:09.49]It is probably the plant which grows the most slowly. [02:14.77]It can take a hundred years to grow a few centimetres. [02:20.51]But plants can also be as big as the Giant Redwood, [02:25.55]the world's most massive living thing. [02:29.50]One tree in California is 84 m high [02:35.38]and probably over two thousand tonnes in weight. [02:40.24]No other type of tree grows higher than the Giant Redwood. [02:45.56]The Dead Horse Arum attracts flies by looking and smelling like dead meat. [02:52.33]Once they get inside the plant,it shuts a door, [02:58.29]and keeps them prisoner for a night. [03:02.41]During the night, it drops pollen on them. [03:07.06]It releases them the next morning covered in pollen, [03:12.52]so that they can go and carry the pollen to another Arum. [03:17.80]One type of Acacia tree in South America encourages ants to live in it. [03:24.96]The tree provides the ants with a home(in special branches) [03:31.30]and with food (little pieces of protein at the end of some leaves). [03:38.07]In return,the ants defend their tree as fiercely as they can. [03:44.00]They attack any other insect or animal which comes near, [03:49.07]and even remove other plants growing near it [03:53.72]LISTENING [03:58.29]Understanding the sequence of events [06:52.55]SPEAKING [06:57.12]A Talk time [07:00.78]Helping our listeners to understand us [07:05.33]When we talk to people, we must use our voices [07:10.68]so thatour listeners can underst and us easily. [07:15.54]We should:speak loudly enough to be heard;pronounce words correctly; [07:24.92]stress words or syllables that we think are important; [07:30.17]let our voices rise or fall at the end of sentences,clauses or phrases [07:37.74]which are often shown by punctuation marks; [07:42.50]pause at the end of sentences,clauses or phrases. [07:48.66]Exercise A1 [07:52.22]I have an announcement to make. [07:56.97]It's about this year's Science Exhibition. [08:02.61]Last week,I asked for volunteers to help with the arrangements. [08:11.96]Up to now,only one person has given me her name. [08:19.51]I need six more,so please let me have some more names,by Friday at the latest. [08:30.98]Exercise A2 [08:34.95]Ladies and gentlemen(p) [08:38.79]For the past year(p) [08:42.34]I've been experimenting with the blood of mice, [08:49.01](p)and I've made a very interesting discovery. [08:55.35]Every day,of white cells in the blood rises and falls. [09:04.52]Even more interesting there is a rhythm to this rise and fall. [09:13.67]I believe this rhythm is present in ail living things,including ourselves. [09:25.63]more language input(Ⅲ) [09:29.57]Reading [09:33.94]Learn to care for plants [09:37.59]The Native Plant Gardens in Victoria British Columbia [09:43.24]Canada contain a large collection of living examples of [09:48.70]plants that grow in the local area. [09:52.74]Most of the plants are collected from the wild.Some are from nurseries. [09:59.09]The gardeners look after the plants and the beds very carefully. [10:04.73]They cultivate the soil,and water the plants regularly. [10:10.51]They also check for diseases or pests once a week. [10:16.39]The name of each plant,the place it came fromits location in the gardens [10:23.93]and its reference number are all recorded on cards and in computer files. [10:30.70]Records of the yearly growth cycles of many plants are also available. [10:36.87]The Native Plant Gardens offer an ideal setting for school pro grammes[10:43.71]in plant identification,plant use and ecology. [10:49.35]Students often come here for outdoor studies [10:54.81]and hands on gardening and research [10:59.17]Listening [11:04.61]Too shy!you are going hear a passage about a plant called mimosa. [11:10.85]fill in the blanks with the wrds you hear on fape. [11:15.40]Have you ever seen a mimosa plant? [11:19.86]Perhaps you have one right there in your home. [11:24.72]Mimosa is a small(1)__which grows to about(2)___cm in height. [11:31.67]It is a (3)___plant. [11:35.64]If you(4)___it,its leaves will(5)___up within a few seconds. [11:41.28]Scientists say that these leaves contain a special kind of cell. [11:47.45]the(7)___in the cells quickly moves into the spaces between the cell walls [11:54.11]The cells then(8)___causing the leaves to(9)___. [11:59.54]If the plant is left alone, [12:02.99]the cells will soon fill with(10)__ and the leaveswill(11)___again.But remember: Don't be like the touchy mimosa yourself! [12:09.16]Many people like this(12)___plant. [12:13.31]It's(13)___watchingthe leaves(14)___and(15)___. [12:17.99]But remember: Don't be like the touchy mimosa yourself!

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