听英语背句型CD1 Unit08

发表于:2018-12-03 / 阅读(28) / 评论(0) 分类 探索与发现2012年

A hundred years ago, there are one and a half billion people on earth. Now, over six billion crowd our fragile planet. But even so, there are still places barely touched by humanity. This series will take you to the last wildernesses and show you the

发表于:2018-12-03 / 阅读(36) / 评论(0) 分类 探索与发现2012年

Alright. Ive got a nice-sized hole here, all the way through to the water and that should do. What Im gonna do now is Ive got a little bit of a weight from just a rock. And then Ive made some little bit of thread out of a para cord as a line and then

发表于:2018-12-03 / 阅读(34) / 评论(0) 分类 探索与发现2012年

They look a bit old and tatty but these things are probably pretty strong and with some of my para cord looped over this. And Im using, just using some parachute stuff to take the friction on my hands. Theres no reason why I shouldnt try and shimmy m

发表于:2018-12-03 / 阅读(27) / 评论(0) 分类 探索与发现2012年

The bad weather is about to hit me. Ive got minutes until the deluge begin. Even though Im not staying out here tonight, Ill show you how the Aborigines would build a shelter against this sort of rain. Ok. What I can do here is build a bit of a bed s

发表于:2018-12-03 / 阅读(35) / 评论(0) 分类 探索与发现2012年

But the glyptodont wasn't a reptile. So what was it? There is a relative of the glyptodont thats still alive today. It's the armadillo and it's a mammal, the only mammal with this kind of armor in the whole of North America. It may give us some idea

发表于:2018-12-03 / 阅读(43) / 评论(0) 分类 探索与发现2012年

And that will effectively be the shoe. I take these ones off. And thats my frame now here. And what I need to do is put a couple of a crossbeams in and then just interweave it with my parachute rigging lines. And then attach my boot to it. And that w

发表于:2018-12-03 / 阅读(40) / 评论(0) 分类 探索与发现2012年

This creates steam in oasis and a profusion of life. Today, these warm springs are a refuge for one of Florida's most tropical inhabitants. The West Indian Manatee wasn't present during the last ice age, but returned here as the waters warmed up. Eve

发表于:2018-12-03 / 阅读(26) / 评论(0) 分类 探索与发现2012年

This is Florida, a taste of the tropical, one of the world's most popular holiday destinations. Here mankind's unquenchable desire to explore and colonise reaches astronomical proportions. Eight, seven, six, five, four, three, two, one. Ignition. Lif

发表于:2018-12-03 / 阅读(35) / 评论(0) 分类 探索与发现2012年

By piecing together the evidence these creatures left behind, we can build a picture of this sub-tropical corner of the continent as it was 13,000 years ago. While most of North America was still in the grip of the Big Freeze, Florida was an ice age

发表于:2018-12-03 / 阅读(42) / 评论(0) 分类 探索与发现2012年

Dawn has broken over the outback in north Australia. As soon as the sun comes over the horizon, I can feel its warming rays. The temperature is already 90 degrees Fahrenheit and rising. But at least, Im near water. Its time for an early-morning river

发表于:2018-12-03 / 阅读(32) / 评论(0) 分类 探索与发现2012年

At first sight, manatees might look like seals or dolphins. But in fact, some of their closest relatives live on land. These toenails are the giveaway, remarkably similar to those of elephants. 13,000 years ago, two other members of the elephant fami

发表于:2018-12-03 / 阅读(37) / 评论(0) 分类 探索与发现2012年

It tastes good and will give you valuable vitamin C, up to eight times more than orange juice. But its not all over. And trudging through the soft snow makes progress painfully slow. But theres one possible solutionto try and make a pair of snow shoe

发表于:2018-12-03 / 阅读(43) / 评论(0) 分类 探索与发现2012年

If he gets one, my plan is to chase him off the kill and take the meat myself. But hes heard me. There will be no rabbit for dinner tonight, and I didnt catch any trout either. But if you are luckier than me, my advice is just get stuck in. Theres no

发表于:2018-12-03 / 阅读(42) / 评论(0) 分类 探索与发现2012年

Ok, now, I can easily make a shelter tucked under this little spruce tree here, really, with a minimum of effort. And what Im gonna do is take this rucksack parachute off. What Ive got to do is clear a bit of a platform, clear the snow away, break of

发表于:2018-12-03 / 阅读(39) / 评论(0) 分类 探索与发现2012年

And you can see when Im actually walking on here, this is all the pine and the earth is actually on top of the snow. And this stuff Im hitting would just be like concrete. Splintering all these trees and ripping them apart. And basically, this is all

发表于:2018-12-03 / 阅读(28) / 评论(0) 分类 探索与发现2012年

But how did one man and a spear produce the huge force behind this blow? The answer lies with small bits of ivory like this. They were once part of an atlatl, or spear thrower. An atlatl acts as a sort of catapult, magnifying the strength of a hunter

发表于:2018-12-03 / 阅读(41) / 评论(0) 分类 探索与发现2012年

These holes are the unmistakable hallmark of a violent death. Their shape suggest they were made by the teeth of a big cat, but which one? Today theres only one large cat in the region, the Florida panther. Though similar to the cougar at the western

发表于:2018-12-03 / 阅读(38) / 评论(0) 分类 探索与发现2012年

But most significant of all, the jaguar has a tell-tale trademark. Instead of going for the neck or snout like most cats do, it kills with a crushing bite through the skull into the brain. This makes the jaguar prime suspect in this case. Even the gl

发表于:2018-12-03 / 阅读(30) / 评论(0) 分类 探索与发现2012年