评论
打印
本听力材料来自于老托partb，partc，是公认实施有效的听写材料，对于上手托福时间不长的同学非常适合。我曾经一次短时间备考听力提高了7分也归功老托。希望大家和我一样一定要坚持下来噢。相信坚持学习的同学听力上都会有很大的飞跃！
Nopain, no gain.我们的安排是这样的，第一遍用听力软件精听材料（建议做单句听写，听写的时候不要偷看我给的挖空题），然后按照我给的挖空题填关键词，回复后即可看到听力原文和文章精解，我将把难点和易错点oneby one 分析给大家。
回复填空答案格式如下：1____2____3____...et.al.
Since we've been discussing alternative fuels lately, I wanted to pass onto you some information I read about a new fuel that's been in the news a lot lately. It's called A-21.It's ______ of water and a chemical known as ______. It seems to be avery promising fuel because it's much cleaner than the ______ that we usetoday. That's not to say that it doesn't pollute, but it is cleaner. A-21 isn'tlike some other alternative fuels that require completely new types of engines.A-21 still works in regular, everyday ______ engines --- like the ones incars --- with only minor mechanical modifications. So changing over wouldn't bea big deal.You may doubt some of these claims as many researchers have. Some people feared that because it contains about 45 percent water it would freeze in the winter. But a small amount of ______ was added to it, and that seems tohave solved the problem.A-21 has recently undergone street tests in buses in Reno, Nevada. So far it seems to work just fine. This is a good thing, especially in Nevada, because the state government there has passed a law requiring that a large percent age of vehicles in Nevada run on alternative fuels. A-21 should help.
