[化] 锰催干剂

Some of this ice age dung was found beneath the skull in the Aucilla. The dung contained plant remains that tell us what the mastodon was browsing on 13,000 years ago or morea mixture of trees and grasses. This suggests that ice age Florida was drier

发表于:2018-12-27 / 阅读(125) / 评论(0) 分类 探索与发现2013年

This is Scientific American's 60-Second Science, I am Cynthia Graber. This'll just take a minute. It might look and even feel like paper, but a new material created by scientists at MIT is designed to be an oil spill super-absorber. This technology d

发表于:2019-01-08 / 阅读(169) / 评论(0) 分类 Scientific American(六)月

This is Scientific American -60 seconds science. Im Cynthia Graber. This will just take a minute. A coal mine can degrade its local environment. But fungus may inadvertently help clean up the mine with its own waste products. Researchers worked with

发表于:2019-01-08 / 阅读(171) / 评论(0) 分类 Scientific American(七)月

This is scientific Americans 60 second science,I'm Cynthia Graber.This will just take a minute.A coal mine can decrease the local environment but a Fungi may indivertantly help cleanup the mine with its own waste products. Researchers worked with the

发表于:2019-01-08 / 阅读(181) / 评论(0) 分类 Scientific American(七)月

1. The Mayor of the Albuquerque, New Mexico says a 10-hour protest turned into a mayhem as police clashed with hundreds of protestors. The demonstrators are protesting recent police shootings there. 2. Washington State authorities say they expect dri

发表于:2019-01-11 / 阅读(172) / 评论(0) 分类 美联社新闻一分钟2014(四)月

Getting Out Of The Rain Have you ever dashed across a parking lot in a sudden rainstorm? You might think that youll stay drier by running as fast as you can-but wait-the faster you run, the more drops youll run into horizontally, soaking your front.

发表于:2019-01-22 / 阅读(153) / 评论(0) 分类 英语时差8,16

Here are 7 health problems from eating too many almonds! 以下是吃太多杏仁会导致的7种健康问题! 1.Kidney Stones 肾结石 Certain diets and foods can make people more prone to kidney stones, especially diets high in oxalates. This is

发表于:2019-02-07 / 阅读(158) / 评论(0) 分类 英语美文

【英文原文】 Have you ever dashed across a parking lot in a sudden rainstorm? You might think that youll stay drier by running as fast as you can.but wait!The faster you run, the more drops youll run into horizontally, soaking your front. You w

发表于:2019-02-16 / 阅读(116) / 评论(0) 分类 英语听力广播—Listening
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