单词:
单词: 相关文章
Natural gas could be used for energy. One of the ways that companies get it is called hydraulic fracturing or fracking. It's one engineer's use water and chemicals to crack open rocks deep underground. And that will release those natural gases. There
Before you read the poster below, discuss what you know about HIV/AIDS with your classmates. Make a list of words that you might come across in this poster. HIV/AIDS:ARE YOU AT RISK? HIV is a virus. A virus is a very small living thing that causes di
Oil spill, Day 42 of this oil spill in the Gulf of Mexico. Still there is no end in sight for this crisis. Right now take a look with me. Work under water and under way to place a custom built dome over that ruptured well. Remember that effort top ki
Harnessing Ocean Wave Power Provides Cheap Electricity 利用海洋波浪提供廉价电力和饮用水 WASHINGTON An often overlooked renewable energy resource is the power of ocean waves. Scientists in California say harnessing energy from the regu
Idiom: Put your money where the mouth is ( support your words with actions )Hit the book: Humming noise Auxiliary Flicker Whine Hydraulic Taxiing Unnerving Prolong Flap The humming noise when you board That's the auxiliary power unit at the back of t