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1、Audio-Visual Classes,Unit: 13 Swimming with Sharks,Background Notes,1- Sharks Sharks are a type of fish with a full skeleton and a highly streamlined body. The earliest known sharks date from more than 420 million years ago. Since that time, sharks have been divided into 440 species, ranging in size
2、 from 17 cm in length, to the whale shark, the largest fish, which reaches about 12 meters . Sharks are found in all seas and are common down to depths of 2,000 meters. They generally do not live in freshwater, with a few exceptions such as the bull shark and the river shark which can live both in s
3、eawater and freshwater. They breathe through five to seven gill slits. Sharks have a covering of dermal denticles that protects their skin from damage and parasites, and improves their fluid dynamics so the shark can move faster. They have several sets of replaceable teeth. .,2- Great White The Grea
4、t White Shark, also known as White teeth, is an exceptionally large lamnidae (oceanic shark) found in coastal surface waters in all major oceans. Reaching lengths of about 6 meters and weighing almost 2,000 kg, the great white shark is the worlds largest known predatory fish. 3- Seal Island it is a
5、small land mass located about 5.7 km off the northern beaches of False Bay, near Cape Town, in South Africa. The island is occupied by Cape Fur Seals and a few sea birds.,4- Catch-22 it means an impossible situation that you ca not solve because you need to do one thing in order to do a second thing
6、, but you cant do the 2nd thing until you have done the first. This term alludes to Catch-22 , an American historical novel for Joseph Heller, published in 1961, and it is considered as one of the greatest literary works of the 20th century. 5- Jaws it is a horror movie made in 1975, based on Peter
7、Benchleys best-selling novel of the same name. in this movie, a great white shark attacked a lot of beachgoers and killed a lot of swimmers, but finally the police chief has managed to kill the shark.,Great White,Tiger Shark,Mako Shark,Hammerhead Shark,Bull shark,Whale shark,Hunting Sharks,Man kille
8、d by Sharks,Seals,Pre-listening Questions,1- what comes up first on your mind when you hear the word “ Sharks” ? 2- what are the precautions you have to do when swimming with sharks ? 3- Have you ever watched any movies about Sharks ? Do you think the movies showed the real features of sharks ?,Whil
9、e listening,TASK 1 1- D 2- A 3- C 4- C 5- B 6- C 7- B 8- A,TASK 2 Episode 1 1- T 2- F 3- F 4- F 5- T,Episode 2 1- inhabitant 2- surfer 3- concerned 4- three years 5- associate 6- clamped down hard 7- forearms 8- out to sea 9- in his mouth 10- children 11- 70 yards 12- some use,Episode 3 1- setting u
10、p anti-shark nets 3- banning baiting and chumming 6- holding vigils for the victims,Episode 4 1- Jaws 2- Nine; 791 3- Because we are on the meal list of sharks 4- Being murdered, mugged or killed in a war. 5- we may feel whats gonna happen to us,Episode 5 1- sharks have far more to fear from humans
11、because our industrial fishing fleets bring in 100 million sharks a year 2- shark fin soup is regarded as an expensive status symbol in china; chefs in the emperors court were once beheaded if they prepared it incorrectly 3- its fin would be cut off and then it would be thrown overboard alive to sink to the bottom and drown. 4- it is hard to police because most of the sharks are caught in international waters where there is no law against Finning. 5- authorities there raided several processing plants owned by HK Chinese. Seven tons of fins were confiscated.,
