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托福听力荟萃

  • 托福听力荟萃 08

    We've just seen two______large birds that cannot fly: the______and the_______. Over here is an interesting_______from the past. This______animal is not the giant______it appears to be, but an_______. This particular kind of auk is very rare,only 78__...

  • 托福听力荟萃 07

    Before we start our first lab, I'd like to tell you a little bit about the______we'll be using. The first thing I'd like to point out is that the workbook contains a very large amount of material, far more than you could ever handle in a single semes...

  • 托福听力荟萃 06

    Look at our______map and you'll see that the middle third ofthe North American continent from the Rocky Mountains almost to the Mississippi River is pretty flat. This is the Great Plains.This kind of area is sometimes called a______, sometimes a_____...

  • 托福听力荟萃 05

    One reason_______analyze the_______on the ocean floor is to seehow long-term changes in Earth's temperature have affected the depth of theocean. By analyzing the remains of sea animals in old layers of ocean sediment,oceanographers can determine the...

  • 托福听力荟萃 04

    Today I want to discuss_______such as coal, oil, and natural gas. The term fossil fuel refers to the_____,______of plants and animals in_______rock. You see, living plants trap energy from the sun by the process of_______, and they store the energy i...

  • 托福听力荟萃 03

    I'm glad you brought up the question of our investigations into the ______of the Earth's interior. In fact, since this is the topic of your reading assignment for next time, let me spend these last few minutes of class talking about it. There were se...

  • 托福听力荟萃 02

    It's my pleasure to come to you today to talk about the Galileo machine to the planet Jupiter. Galileo was launched in 1989 and we have to wait until the end of 1995 for the ______and its _____ to reach Jupiter. Of course there was some exciting mome...

  • 托福听力荟萃 01

    Located at the NASA Research Center in Iowa is a 5,000-_____,___ of water, and inside the _____is an underwater ______ designed by Dava Newman, an _______engineer. For four years Newman observed _______as they _______ walking on the Moon and on Mars...

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