根据短文内容.从短文后的选项中选出能填入空白处的最佳选项.选项中有两项为多余选项. 1 From 18-25, according to I.Q. scores; but you are wis——青夏教育精英家教网—

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
__1__ From 18-25, according to I.Q. scores; but you are wiser and more experienced with increasing age.
You are smartest in your 20`s; around 30, your memory begins to go down, particularly your ability to perform mathematical computations, __2__ Your vocabulary at the age of 45, for example , is three times as great as then you graduated form college. At 60, your brain possesses almost four times as much information as it did at the age of21.
__3__ You have the best physical sense of yourself from 15 to 24; the best professional sense form 40 to 49.
Before the age of 24, we believe that our happiest years are yet to come; over 3 0, we believe that they are behind us. A National Health survey agrees: after the age of 30, we “ become more realistic and do not view happiness as a goal in itself. If we maintain our health, achieve professional and emotional goals, happiness, we feel, will follow”.
__4__ Generally between 30 and 39, but the peak(顶峰) varies with different professions.
Mosart wrote a symphony(交响曲) and four sonatas by the age of 8, and Mendelssohn composed（作曲） his best known work A Midsummer Night` s Dream, at 17, but most of the great music was written by men between 33 and 39.
Though the peak in most fields comes early, most Nobel Prize winners did their top research in their late 20`s and 30`---creative people continue to produce work with high quality throughout their lives.__5__.

E. But your I.Q. for other tasks goes up.
F. Creative people usually produce a lot of works.
G. For the “well-conditioned mind”, there is no upper limit.

此题要求改正所给短文中的错误。对标有题号的每一行作出判断：短文中有10处错误，每句中最多有两处。错误涉及一个单词的增加，删除或修改。
此行多一个词：把多余的词用斜线(＼)划掉。
此行缺一个词：在缺词处加一个漏字符号(∧)，在该行下边写出该加的词。
此行错一个词：在错的词下划一横线，在该行下边写出改正后的词。
注意：1.每处错误仅限1词；
2.只允许修改10处，多者（从第11处起）不计分。
There are different train ticket for people to choose from when traveled by train. They may want to buy a single ticket and a return ticket. A single ticket allows them enjoy more freedom at their destination while a return not only is cheaper but also save them the trouble of buying the ticket when they decide to return. Some people prefer hard seats to soft one. Young people like to have hard seats because enjoy the company of other passengers is what they need during a journey. Businessmen would not like to have soft seats. They want to have a good rest. When they get off the train, they were still energetic and can rapid go on to do their jobs.

At the beginning of the twentieth century, many people thought that the Americanfamily was falling apart.A century later, we know that this was not the case. However,although the family is still alive in the United States, its size and shape were very different100 years ago.
In the late 1800s and early 1900s, there were mainly two types of families in theUnited States: the extended and the nuclear. The extended family usually includesgrandparents, parents, and children living under the same roof. The nuclear familyconsists of only parents and children.
Today there are many different kinds of families. Some people live in “traditional” families, that is, a stay-home mother, a working father, and their own biologicalchildren. Others live in two-paycheck families, single-parent families, adoptive or foster,families, blended families (where men and women who were married before marry againand combine the children from previous marriages into the new families），childlessfamilies, and so on.
What caused the structure of the family to change? In the early 1900s the birthratebegan to fall and the divorce rate began to rise. Women were suddenly choosing to go tocollege and take jobs outside the home. In the 1930s and 1940s, many families faced seriousfinancial, or money problems during the Great Depression, when many people lost theirjobs. During World War II（1939-1945)，5 million women were left alone to take care oftheir homes and their children. Because many men were at war, thousands of these "war widows" had to go to work outside their home.
During the next ten years, the situation changed. There were fewer divorces, andpeople married at a younger age and had more children than the previous generation. It wasunusual for a mother to work outside the home during the years when her children weregrowing tip. Families began leaving cities and moving into single-family homes in thesuburbs. The traditional family seemed to be returning.
In the years between 1960s and 1990s, there were many important changes in thestructure of the family. From the 1960s to the early 1970s, the divorce rate doubled andthe birthrate fell by half. The number of single-parent families tripled, and the number ofcouples living together without being married doubled again. In fact, the single-parenthousehold, once unusual, has replaced the "traditional" family as the typical family in theStates. If we can judge from history, however, this will probably change again in thetwenty-first century.
The Changes of the American Family

Main comparisons		Contexts
Different___1____		There were two __2___ types of families in the past, ___3____, the extended and the nuclear.
		Nowadays __4___types of families can be seen than before.
Changes in different ___5_____.	In the 1900s and 1940s	Many of the women had to work outside due to the __6___of money., thus causing the fall of __7__and the rise of divorce rate.
	In the 1950s	Divorce rate slided and there were more children . The families tended to be ___8___ again.
	In the years between 1960s and 1990s	Different types of familes__9____. Traditional families are no longer the typical ones in America.
A trend worth noting
Author’s opinion on changes	The present structure is ___10____; it will experience changes again in the near future.