However weak we are, we can still do somethin...

However weak we are, we can still do something against the powerful nature as long as we are ______ prepared.

A．specially        B．physically        C．adequately        D．equally

高三英语单项填空中等难度题查看答案及解析

短文改错

Nowadays we can still see some behaviors against public morals. As was often the case, people tend to talk loud in public places annoyed others around. Spitting and littering rubbish can be seen anywhere. Besides, it’s common that the young or middle-aged sit on the bus when the elderly have to stand. Measure must be taken to change this situation. First of all, as students, we should manage our own behaviors but help people around you form good habits. Meanwhile, it is necessary for the government and some organizations to encourage people to behave proper. Don’t undervalue the role we can play with. Do remember we can make difference! Take action right now!

高三英语完形填空中等难度题查看答案及解析

However wealthy we may be, 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 be better spent on something else.

Every hour of our time has a value. For every hour we work at one job we could quite easily be doing another, or be sleeping or watching a film. Each of these options has a different opportunity cost—namely, what they cost us in missed opportunities.

Say you intend to watch a football match but the tickets are expensive and it will take you a couple of hours to get to and from the stadium. Why not, you might reason, watch the game from home and use the leftover money and time to have dinner with friends? This—the alternative use of your cash and time—is the opportunity cost.

For economists, every decision is made by knowledge of what one must forgo—in terms of money and enjoyment—in order to take it up. By knowing precisely what you are receiving and what you are missing out on, you ought to be able to make better-informed, more reasonable decisions. Consider that most famous economic rule of all: there's no such thing as a free lunch. Even if someone offers to take you out to lunch for free, the time you will spend in the restaurant still costs you something in terms of forgone opportunities.

Some people find the idea of opportunity cost extremely discouraging: imagine spending your entire life calculating whether your time would be better spent elsewhere doing something more profitable or enjoyable. Yet, in a sense it's human nature to do precisely that—we assess the advantages and disadvantages of decisions all the time.

In the business world, a popular phrase is "value for money." People want their cash to go as far as possible. However, another is fast obtaining an advantage: "value for time." The biggest restriction on our resources is the number of hours we can devote to something, so we look to maximize the return we get on our investment of time. By readmg this passage you are giving over a bit of your time which could be spent doing other activities, such as sleeping and eating. In return, however, this passage will help you to think like an economist, closely considering the opportunity cost of each of your decisions.

1.According to the passage, the concept of "opportunity cost" is applied to　　 .

A. making more money 　　　　　　　　　　 B. taking more opportunities

C. reducing missed opportunities 　　 D. weighing the choice of opportunities

2.Hie "leftover ... time" in Paragraph 3 probably refers to the time　　 .

A. spared for watching the match at home

B. taken to have dinner with friends

C. spent on the way to and from the match

D. saved from not going to watch the match

3.What are forgone opportunities?

A. Opportunities you forget in decision-making.

B. Opportunities you give up for better ones.

C. Opportunities you miss accidentally.

D. Opportunities you make up for.

高三英语阅读理解中等难度题查看答案及解析

We must do what we can to ____________the river ______________.

A. protect; against polluting       B. stop;  polluting

C. keep; being polluted          D. prevent; from being polluted

高三英语单项填空中等难度题查看答案及解析

We should do　　 we can to help those who lost their homes in the heaviest rain.

A. whatever 　　　　 B. however　　　　 C. which 　　　　　　 D. that

高三英语单项填空中等难度题查看答案及解析

The society can remain good as long as we are willing to fight for it—and to fight against whatever imperfections ________ exist.

A.shall B.may C.should D.would

高三英语单项填空简单题查看答案及解析

The society can remain good as long as we are willing to fight for it—and to fight against whatever imperfections ________ exist.

A. shall　　 B. may　　 C. should　　 D. would

高三英语单项填空简单题查看答案及解析

Everyone hopes that we can do something to make things better, so we can't help ______

under the stress.

高三英语单项填空简单题查看答案及解析

58. --- Do you still remember when we went to the Summer Palace?

--- I can’t remember it well, but it _____ sometime last July.

高三英语单项填空简单题查看答案及解析

There are still many problems ahead of us, but by this time next year we can see light at the end of the ________.

A. battle        　　 B. day        C. road        D. tunnel

高三英语单项填空简单题查看答案及解析