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B．forms a 60 degree angle with the horizontal axis．
C．is vertical．
D．is horizontal．
B．the rate at which demand changes when price changes
C．how responsive the quantity demanded is to changes in price
D．the percentage-slope of the demand curv
E．None of these correctly defines what price elasticity of demand measures．
B．the quantity demanded at a given price
C．The shift in the demand curve when price changes
D．The demand for a product holding price constant
"Family" is of course an elastic word．And in different countries it has different meanings．Butwhen British people say that their society is based on family life, they are thinking of "family" in itsnarrow, peculiarly European sense of mother, father and children living together in their own houseas an economic and social unit．Thus, every British marriage indicates the beginning of a new andindependent family--hence the tremendous importance of marriage in British life．For both man andwoman, marriage means leaving one&39; s parents and starting one&39; s own life．The man&39; s first dutywill then be to his wife, and the wife&39; s to her husband．He will be entirely responsible for her finan-cial support, and she for the running of the new home．Their children will be their common responsi-bility and their alone．Neither the wife&39; s parents nor the husband&39; s, nor their brothers or sisters,aunts or uncles, have any right to interfere with them--they are their own masters．
Readers of novels like Jane Austen&39; s Pride and Prejudice will know that in former times, mar-riage among wealthy families were arranged by the girl&39; s parents, that is, it was the parents&39; duty tofind a suitable husband for their daughter, preferably a rich one, and by skillful encouragement tolead him eventually to ask their permission to marry her．Until that time, the girl was protected andmaintained in the parents&39; home, and the fmancial relief of getting rid of her could be seen in theirgiving the newly married pair a sum of money called a dowry(嫁妆)．It is very different today．
Most girls of today get a job when they leave school and become financially independent before theirmarriage．This has had two results．A girl chooses her own husband, and she gets no dowry．Everycoin has two sides; independence for girls is no exception．But it may be a good thing for all of thegirls, as their social status are much higher and they are no longer the subordinate(部下，下级) oftheir parents and husbands．
What does the author mean by "Family is of course an elastic word"？ 查看材料
A.Different families have different ways of life．
B.Different definitions could be given to the word．
C.Different nations have different families．
D.Different times produce different families．
此题为判断题(对，错)。
Economists try to address their subject with a scientist ’s objectivity. They approach the study of the economy in much the same way as a physicist approaches the study of matter and a biologist approaches the study of life: (2)They devise theories, collect data, and then analyze these data in an attempt to verify or refute their theories.
To beginners, it can seem odd to claim that economics is a science. After all, economists do not work with test tubes or telescopes. (3)The essence of science, however, is the scientific methods--the dispassionate development and testing of theories about how the world works.
This method of inquiry is as applicable to studying a nation ’s economy as it is to studying th earth’s gravity or a species ’ evolution. (4)As Albert Einstein once put it, “The whole of nothing more than the refinement of everyday thinking. ” (225words)
(1)__________________________________
(2)__________________________________
(3)__________________________________
(4)__________________________________
A、the price of the good responds substantially to changes in demand.
B、demand shifts substantially when income or the expected future price of the good changes.
C、buyers do not respond much to changes in the price of the good.
D、buyers respond substantially to changes in the price of the good.
A、lackage of elasticity
B、elastic
C、unelatic
D、powerfully elastic
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