改错题：The integration of independent states could best be brought about by first creating a central organization with authorities over technical economic tasks.答案是把 authorities 改为authority，请问为什么呢？
FEMALE PROFESSOR: Now, migration’s a natural survival strategy.Overthe past two million years, colder glacial periods have alternated with warmer interglacial periods.FEMALE PROFESSOR: And so…um, in-in response to these gradual climatic swings, some species have shifted their ranges h...
... only few people use a word, a dictionary will either tell you this or not list it.——这个句子到底对不对？我自始至终认为：这个句子一点问题都没有，是一个合乎语法和逻辑的句子。下面是我个人对这个问题的理解和看法，欢迎各位专家老师...
... Province, is a unique natural wonder. Every year, visitors from all overthe world come to admire the mountains, lakes, streams, trees, underground springs and waterfalls which make Jiuzhaigou Valley an area of outstanding natural beauty.
...ies.B对A说：I
already told you they fared much worse by the time it was over. I was caught by
surprise. That’s all.A:The
only surprise here is that you are still alive to lie about it.2.How is it you propose to help, exactly?请问how is it是某种特殊的句型吗？好像没见过，并且y...
Before the reform and opening-up policy, Shenzhen was nothing but a small fishing village which has a population of over 30 thousand people.这里为什么用 which? 可以用 where 吗？
"There you are twice mistaken," said Judson Tate, distributing the words over at least an octave of his wonderful voice.请教老师："There you are twice mistaken," 如果去掉there,即 “You are twice mistaken,” 含义和语法上有何不同？
In winter, when the lake freezes over, fissures and methane bubbles form in the ice, making it feel as if you are walking on air. 请问这里的it是什么用法，和make有关系吗？把it换成you的话句子结构也是对的，但句意有变化是吗？
...wasn't it her old smile she wore?—to sit there
around the fire, and weep overthe woes of the "Babes in the Wood,"
who lay down side by side in the great solemn shadows; and how strangely glad
we felt when the robin-red-breast covered them with leaves, and last of all
when the angels took them out...
On a recent sunny day, 13,000 chickens roam over Larry Brown’s 40
windswept acres in Shiner, Texas.
Some rest in the shade of a parked car. Others drink water with the cows. This
all seems random, but it’s by design, part of what the $6.1 billion U.S. egg industry
bets will be its next big thing...
In the filthy jail in Sianfu there were over 200 of them, captured doing espionage or propaganda.这个句子的意思很容易理解是，他们中超过两百多人由于间谍罪或散布言论被捕。请问各位老师过去分词captured 和doing之间为什么不加上介词 for而是直接...
...st things you will see is Big Ben, the famous clock which can be heard all overthe world on the B.B.C. If the Houses of Parliament had not been burned down in 1834, the great clock would never have been erected. Big Ben takes its name from Sir Benjamin Hall who was responsible for the making of the...