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雅思真题听力场景精练 第65期:科技类讲座 生物与化学(2)
Another kind of seasonal migration is altitudinal migration, which is where animals move vertically rather than to a different region of the earth. -
雅思真题听力场景精练 第64期:科技类讲座 生物与化学(1)
We’ll soon be seeing the first robin of spring——and so, it’s a perfect day to begin talking about migration. Migration is the main strategy that animals have for avoiding adverse environments and t... -
雅思真题听力场景精练 第63期:科技类讲座 医药与环境(6)
Plastic causes problems, because there are so many different types of plastic in use today, and each one has to be dealt with differently. -
雅思真题听力场景精练 第62期:科技类讲座 医药与环境(5)
We also discovered that waste that’s collected from householders is taken to places called ”bring banks”, for sorting and bailing into loads. -
雅思真题听力场景精练 第61期:科技类讲座 医药与环境(4)
Well, my group has been doing a project on how household waste is recycled in Brain. We were quite shocked to discover that only 9% of people here in the UK make an effort to recycle their househol... -
雅思真题听力场景精练 第60期:科技类讲座 医药与环境(3)
Medications are used to treat a variety of conditions, diseases and symptoms. But unfortunately, many medications have harmful side effects and many medications are also harmful or deadly if taken ... -
雅思真题听力场景精练 第59期:科技类讲座 医药与环境(2)
When it comes to high blood pressure, there are several ways your doctor may suggest getting your numbers under control. -
雅思真题听力场景精练 第58期:科技类讲座 医药与环境(1)
The Earth is the third planet from he Sun and the largest of the terresrial planets in our solar system in diameter, mass and density. It is also referred to as the World and Terra. -
雅思真题听力场景精练 第57期:科技类讲座 地质与考古(6)
Okay, now for some practicalities. What do geographers actually do? Well, we collect data to begin with. You’ll be doing a lot of that on your first field trio! -
雅思真题听力场景精练 第56期:科技类讲座 地质与考古(5)
So, welcome to your introductory geography lecture. We’ll begin with some basics. Firstly, what do we learn by studying geography? -
雅思真题听力场景精练 第55期:科技类讲座 地质与考古(4)
For more than a hundred years after the first dinosaur fossils were dug up, paleontologists just assumed that dinosaurs were cold-blooded animals, like modern lizards and snakes are. -
雅思真题听力场景精练 第54期:科技类讲座 地质与考古(3)
And the possibility of living organisms on Mars could still not be ruled out. Now, you should realize that it is a lot easier to prove that something exists than it is to prove that something doesn... -
雅思真题听力场景精练 第53期:科技类讲座 地质与考古(2)
The planet Mars has been in the news recently, because it is going to pass very close to us soon. So this might be a good time to talk about the Red Planet. -
雅思真题听力场景精练 第52期:科技类讲座 地质与考古(1)
Island biogeography is the study of plant and distributions on islands. Studies of this field boomed soon after the publication of MacArthur and Wilson's seminal "Theory of island biogeogra... -
雅思真题听力场景精练 第51期:讲座常用语(4)
Interviewer: Now let's just have a look at the Antarctic Treaty. What do you see as the main achievements of the treaty?Doctor: Well, firstly it means that the continents is reserved for peacef...
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