自定义放映8.ppt

From February to May, nearly 120 million gallons of water a minute make the plunge into the gorge. The Amazon Rain Forest covers more than a billion acres of northern South America. If this rain forest were a country, it would be the ninth largest in the world! Some scientists call the area the “lungs of our planet”. The area produces more than 20% of the world’s oxygen. Millions of animal and plant species live in the Amazon, including one third of the world’s bird species! A visit to the Amazon, or any of these natural wonders, is an experience you will treasure for a life time. 课件作者： 作者单位： 牛莉 西安交通大学 链接钮；返回第一张幻灯片，可以根据需要多次聆听课文的相关内容。 点击左上角的链接按钮，可以直接播放和“Mt. Everest”相关的内容。 点击右下角的链接按钮，可以直接播放和“Grand Canyon”相关的内容。 点击右下角的链接按钮，可以直接播放和“Great Barrier Reef”相关的内容。 点击右下角的链接按钮，可以直接播放和“Mosi oa Tunya”相关的内容。 ▼ Mt. Everest, which straddles the border between China and Nepal, is the world’s highest mountain. ▼ It measures 29,029 feet/8844.43 meters. The mountain is still growing! Geological forces push it up a few millimeters each year. They first reached the peak’s summit in 1953. Sir Edmund Hillary Tenzing Norgay a Sherpa Sir Edmund Hillary Tenzing Norgay a Sherpa Since then more than 1,000 people have reached the top – and at least 100 have died trying. Why climb Everest? “Because it is there.” -- George Mallory, a Briton, part of the first expedition Why? ▲ The Colorado River flows through the canyon. The river created several other canyons, but the Grand Canyon in Arizona is the most beautiful. Arizona ▲ Arizona Visitors to the Grand Canyon admire its breathtaking colors, rock formations and cliffs. No picture can adequately capture its beauty. The canyon is 277 miles long and anywhere from 4 to 18 miles wide, rim to rim. A national park protects the canyon’s most spectacular section. Visitors can either hike or ride a mule from the rim to the canyon floor 5,280 feet below. The Great Barrier Reef extends 1, 200 miles along Australia’s northeast coast through the