When should you teach children, and when should you let them explore? IT IS one of the oldest debates in education. Should teachers tell pupils the way things are or encourage them to find out for themselves? Telling children truths about t... 详情>>
2019-03-21
A psychological leap is needed—both in British academia and in Westminster EMO OF FRIESLAND was Oxfords first recorded foreign student, and since 1190 they have kept pouring in. Both sides have benefited: Britains universities, economy an... 详情>>
2019-03-21
表转折关系的关键词: but，however，yet，in fact，on the other hand； A，but B：否定A而肯定B，则A，B两部分内容是相反的。 例如：Computerized data storage and electronic mail were to have heralded the paper... 详情>>
2019-03-21
（1） 大因果关系/分句间因果关系（即：原因、结果是两句话） because， in that， as， since， for， so（that）， therefore， thus， hence， as a result （2） 小因果关系/句内因果关系（在一句话... 详情>>
2019-03-21
A...and B... (1) 并列双方性质相同； (2) 当A、B都比较复杂时，应该从最后一项找起，根据B的形式到前文找到A 例如：The modern city consists of monstrous edifices and of dark， narrow streets full of petro... 详情>>
2019-03-21
Three weeks ago the government scrapped plans to build the countrys first carbon capture and storage (CCS) facility at Longannet power station in Fife in Scotland. That was a blow in the fight against climate change: if carbon dioxide can b... 详情>>
2019-03-14
Getting an erection is no problem for male ostriches – but maintaining it for more than a few seconds is a different matter. The birds may have inherited their underpowered genitalia from their dinosaur ancestors. The penis is a vital pie... 详情>>
2019-03-14
While I was reading William deBuyss new book, A Great Aridness, two massive dust storms reminiscent of the 1930s raged across the skies of Phoenix and of Lubbock, Texas. Newspapers blamed them on the current drought in the West, which is pr... 详情>>
2019-03-14
Devils Lake is where I began my career as a limnologist in 1964, studying the lakes neotenic salamanders and chironomids, or midge flies. Back then, the lake covered about 80 square kilometers, had a maximum depth of about 3 meters and held... 详情>>
2019-03-14
DURBAN, South Africa — For 17 years, officials from nearly 200 countries have gathered under the auspices of the United Nations to try to deal with one of the most vexing questions of our era — how to slow the heating of the planet. Eve... 详情>>
2019-03-14
