However wealthy we maybe, we can never find enough hours in the day to do everything we want. Economics deals with this problem through the concept of opportunity cost, which simply refers to whether someone’s time or money could bebetter spent on something else.Every hour of our time has a valu...
The broken ______may cut into your hand if you touch it，you should be careful．（ ）A. glassB. glassesC. candleD. candles对于这道题，A做玻璃讲，肯定是符合题意的。那么B呢，做玻璃杯讲，似乎不行，因为后面用了it。但是作为眼镜来讲...
It would never do to be, perhaps, within arm's length of
happiness and not to try for it, at the risk of dying in the attempt, to try
for itand handit over at last to all mankind!请教各位老师，这句话如何理解？特别是红色标注部分。这句话是小说主人公要打开一扇...
...ppen, an old saying probably occurs to us: easy come, easy go. However, we may wonder why something easy to get are also easy to lose?We think highly of what we pay a lot to get while barely value what we get effortlessly. Thus we take the “easy come” thing for granted and use it unrestrained. S...
...turned suddenly to Mr.
Grayson who had looked on with frank astonishment. "May I use a telephone,
please?" asked The Thinking Machine.如何理解frank astonishment中的frank的意思？
... free markets need the
correcting force of politics to keep them in check. True economic progress
needs them both.57.
What do we learn about Professor Rivoli?A.
She used to work on a cotton farm.B.
She wrote a book about world trade.C.
She wants to give up her teaching job.D.
She wears a T-shirt whe...
...n nothing can be done to change it.3.____ such heavy pollution already, itmay now be too late to clean up
the river.A. Having suffered B.
Suffering C. Suffered第一题为什么主动和被动都可以？第二题为啥不能用主动？柯林斯有个主动的例句 The problems
began last n...
...used to talk about the result or effect of something that may happen or betrue…I will feel very guilty should anything go
wrong. [=if anything goes wrong]—usually used with ifI will feel very guilty if anything should
[=were to] go wrong. … ” --- ( Merriam-Webster's Advanced Learner's
Eng...
First, there maybe a brief cessation or reduction of breathing when falling asleep as the sleeper waxes and wanes between sleep and wakefulness and their differing control mechanisms. “and their differing control mechanisms” and 前面并列的内容是什么？这部分在句子中做什...
... yet as I looked at his dark and expressive face I felt more than ever how true a descendant he was of that long line of high-blooded, fiery, and masterful men. There were pride, valour, and strength in his thick brows, his sensitive nostrils, and his large hazel eyes. If on that forbidding moor a d...
...rdest things, those who bear witness to us and for us. But such solidarity may, in the end, prove false: for it exempts us from the duty to suffer-with (literally, to feel com-passion for) those who remember; it does not demand that we preserve the truth of their memories; it attempts instead to mak...
may:
used in various polite expressions with I
might:
used to politely say something about someone or something一:May
I suggest that you consider the matter further before taking any action.Might
I just say how lovely it is to see everyone here today.二:May
I suggest that you think carefully be...
One of the products they have developed is a flowerpot. Itmay look like other flowerpots. But the container breaks down in the earth within one to five years. And as it breaks down, it naturally releases nitrogen into the soil. 他们开发的产品之一是花盆，它看起来和普通...