高中英語 Unit 3 Under the sea課件 新人教版選修7

Unit 3 Under the sea Save the ocean animals茫茫海洋孕育了無數(shù)海洋生物，然而，其中的綠海龜、藍(lán)鯨和大白鯊正面臨滅絕的危險(xiǎn)，讓我們一起拯救這些瀕危動物吧。Many kinds of animals live in the ocean.Some of those animals are endangered.Only a few are left in the world.Scientists are trying to keep endangered animals safe. Blue whale The blue whale is the largest animal in the world.It is as big as an airplane.The whale can grow to 90 feet long and weigh more than 100 tons. The blue whale lives in all the oceans.It eats tiny animals called krill (磷蝦)A blue whale can eat about 4 tons of krill each day. Blue whales are endangered.People once hunted them for their meat and fat.The fat was used to make oil for lamps.Special laws now protect blue whales. G reen sea turtle The green sea turtle lives in warm waters.An adult green sea turtle eats mostly plants.It can weigh up to 440 pounds.Its shell can grow to 4 feet long.A green sea turtle cant pull its head into its shell the way some turtles can. Why are green sea turtles endangered？People hunt them for their meat and eggs.The turtles also get trapped in nets used to catch fish.Pollution hurts the turtles too.If turtles eat trash，it can kill them. G reat white shark The great white shark is the largest meateating shark.It grows to about 1.5 feet long.It weighs up to 5,000 pounds.The shark has rows of long，sharp teeth.It eats fish，dolphins，seals，and other ocean animals.Great white sharks are often found in waters near the coast.People are a threat to great white sharks.People hunt them for their teeth，jaws，and meat.The sharks also get caught in fishing nets. 謝謝觀看！