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_____...
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...
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...
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...
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...
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...
BEIJING, Feb. 19 (Xinhua) -- China and Japan pledged on Sunday to boost their financial cooperation as the global economic situation remains complex and grim. Financial cooperation is a major part of the economic cooperation between China and Japan,...
新托福考试听力特训PDF文本下载 Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！...
新托福考试听力特训PDF文本下载 Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！...
新托福考试听力特训PDF文本下载 Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！...
