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更多“AL: How nice to see you, Liu. …”相关的问题
A. No, I'm here to see my sister
B. That's fin
C. Yes,it is.And you？
D. Hello, nice to meet you!
A、I like it very much
B、Yes, please
C、It is very nice
D、I’d like my steak medium well, please
A.happy, to see
B.happily, seen
C.happily, to see
D.happily, saw
product is best for your _____ (肤色)？
A、hue
B、ornament
C、complexion
D、pale
A.5 minutes
B.10 minutes
C.15 minutes
D.30 minutes
How are the forward transactions made in the forward market？
A．When the dealers see marginal differences in the rate of exchange in different markets, they can buy the second currency in one market and selling in another.
B．Most of the dealing in the foreign exchange market is to satisfy the immediate requirements of traders.
C．The dealers can close a deal by agreeing the rate of exchange in the meantime in this market and then delivery of currency is specified to take place at a future date.
D．The markets respond to the normal laws of supply and demand of currency.
His daughter June, and her husband, Pete, on the other hand, have to do everything themselves or find builders to do it. They live in a large semi-detached house further out from the center of London than John, but they are still near enough to see him often. They live in the suburbs with a nice garden when their children play. They moved there four years ago to have more space. The only drawback is that June’s husband has to commute into the centre of London every day, but, overall, they are happy with their decision. When they bought the house, a lot needed doing to it and still does. June says, “We have a list of things to do as long as your arm-the roof needs repairing and the chimney needs mending. The bedrooms need decorating and we haven’t had the broken windowpanes replaced yet in the conservatory. We need to fix the gate and repair the path-it looks dreadful when you arrive.
31. John lives in the centre of London.（）
32. The agent hasn’t done anything to John’s flat.（）
33. June and Pete live near to John.（）
34. There are broken windowpanes in conservatory.（）
35. The front of the house is in a good state (处于较好的状态)。（）
假设你在管理一座营运成本基本上为零的收费桥。过桥需求的Q由P=15-(1/2)Q给出。
(1)画出过桥服务的需求曲线。
(2)如果不收费，会有多少人通过该桥？
(3)如果过桥费是5美元，相对应的消费者剩余的损失是多少？
(4)该收费桥的运营方打算把价格上升至7美元。在这一相对较高的价格上，会有多少人通过该桥？该收费桥的收益是上升还是下降了？从你的答案出发，你对需求弹性有何判断？
(5)求与价格从5美元上升到7美元相对应的消费者剩余的损失。
Suppose you are in charge of a toll bridge that costs essentially nothing to operate. The demand for bridge crossing Q is given by P=15-(1/2)Q.
a. Draw the demand curve for bridge crossings.
b, How many people would cross the bridge if there were no toll？
C. What is the loss of consumer surplus associated with a bridge toll of $ 5？
d. The toll - bridge operator is considering an increase in the toll to $7. Al this higher price ,how many people would cross the bridge？ Would the toll bridge revenue increase or decrease？ What does your answer tell you about the elasticity of demand？
e. Find the lost consumer surplus associated with the increase in the price of the toll from $5to $7.
Take a second long piece of paper. Twist the paper once and glue the ends together. Now you have made a Mobius band(带子). For people studying maths, this band is uncommon.
This strange band was first made in the 1800s by a German man namedAugust. Mobius. Mr. Mobius studied maths. He wanted to find a way to show how this band works with maths. Understand it or not, this band has only one surface. You can find this out for yourself.
If you draw a line on the surface of the paper before you twist and glue it, the line is only on one side of the paper. The paper has two surfaces. However, if you draw a line after you make the Mobius band, you can follow the line around all sides of the paper. In other words, the Mobius band must have only one surface.
It is also very interesting to see what happens when you cut the band. If you cut the Mobius band in half once down the line you drew, you do not get two Mobius bands. Instead, after you cut the band, it turns into one large twisted ring. Then, if you cut this ring in half along the middle of the band again, you get two connected(相连的)Mobius bands.
1、What is a Mobius band？()
A、A long piece of paper
B、A paper ring for people to wear
C、A metal ring for music
D、An interesting twisted ring
2、Why didAugust Mobius make this ring？()
A、To help study a maths problem
B、To show it's the same as others
C、To show the only surface of any band
D、To find out how many sides it has
3、How can you change the two surfaces of a long piece of paper into one surface？()
A、Glue the ends of the long piece of paper
B、Cut the two surfaces of the paper into one
C、Draw a line in the middle of the paper
D、Twist the paper once and glue the two ends
4、What do you get if you cut the Mobius band along the middle？()
A、A long piece of paper
B、Two long pieces of paper
C、Two Mobius bands
D、One large twisted ring
5、Which of the following is NOT true？()
A、You can use any long piece of paper to make a Mobius band
B、Any long piece of paper has two surfaces
C、The Mobius band was first made about two hundred years ago
D、You have to draw a line in the middle of the long piece of paper before making a Mobius band
