It was not until liberation that to his hometown．( )A．did he returnB．was he returnedC．he did returnD．he returned 题目和参考答案——青夏教育精英家教网—

For too many，the damage begins early in life．Four out of 10infants（婴儿） born in the United States do not form a strong bond（关系）with either parent，and they will pay for that the rest of their lives．
New research from Princeton University confirms what other researchers have already found：The number of babies born into families that are too poorly equipped to give them a fair chance of having a successful life is extremely big．
That finding is supported by many other research projects，including a study from the University of Rochester showing that nearly one-third of U．S．parents don't know what to expect from their newborns，or how to help them grow and learn and get along with others．Babies，as others have pointed out，don't come with an owner's manual．
The basic problem，according to the Princeton study，is 40percent of infants in the U．S．live in fear or distrust of their parents，and that will turn into aggressiveness（侵犯），defiance（挑衅）and hyperactivity（多动） as they grow into adults．
Of that number，25percent don't bond with their parents because the parents aren't responding to their needs．And a tragic 15percent find their parents so troubling that they will avoid them whenever possible．
That will not necessarily result in a lifetime of violence，but it will make living a successful life much more difficult．
"They can overcome it，"sociologist Sophie Moullin of Princeton，lead author of that study，said in a telephone interview．"It's not a make or break situation，but they might find it harder to control their behavior．"
Moullin，along with coauthors from Columbia University and the University of Bristol in England，analyzed more than 100research projects，to reach their conclusions．
Many factors contribute to the problem，including poverty（贫穷），ignorance（无知），and stress among parents who are so busy with their own problems that a new child is sometimes more than they can handle．
Yet strong bonds，the researchers say，are amazingly simple to achieve．
49．According to the writing style of the passage，it may be a（n）A．
A．news report B．argument C．essay D．debate
50．Which of the following is NOT true？D
A．About 40% of the newborns do not form a strong bond with either parent．
B．Some parents are too busy with their own problems to handle a new child．
C．Parents'failing to respond to their babies'need may lead to future problems．
D．Infants who fail to bond with their parents are sure to have an unsuccessful life．
51．What is the meaning of the underlined word"manual"？B
A．An expert who tells you how to take care of a baby．
B．A book that tells you how to do or operate something．
C．A TV show that tells you how to bond with your baby．
D．A radio program explaining how to look after your baby．
52．What may be discussed in the following paragraph？C
A．Findings of other similar project concerning this topic．
B．Examples of the consequences of lacking strong bonds．
C．Simple ways of achieving strong bonds with an infant．
D．Reasons for failing in building up strong bonds with a child．

8．Electrical devices（仪器）could soon use power make by human energy．Scientists say they have developed an experimental device that produces electricity from the physical movement of a person walking．British scientist Max Donelan and other scientists in Canada and the United States developed the device．
The device connects to a person's knee．As the person walks，the device captures energy each time the person slows down．To do this，the device helps with the slowing sown movement of the leg．The movements of the walking person push parts of a small machine that produces electricity．Using the device，an adult walking quickly could produce thirteen watts of electricity in just a minute．Donelan says walking at that speed could produce enough power to operate a laptop computer for six minutes．
There are several possible uses for the device．Developers say it could help people who work in areas without electricity to operate small computers．The device could also be used in hospitals to operate heart pacemakers（起博器）．It could even be used to assist in the movement of robotic arms and legs．
The experimental version of the device weighs about one and a half kilograms，but it is too costly for most people to buy．But the researchers hope to make a lighter，less costly version．An improved version should be ready in one year．
The developers hope the device will one day help developing countries．Nearly twenty five percent of people around the world live without electric power．
A similar product was invented in 2005by Larry Rome of the University of Pennsylvania．He created a bag carried on a person's back that also produces power from walking．The knee device does not produce as much electricity as the bag．But the bag requires the walker to carry a load of twenty to thirty kilograms．

66．The second paragraph mainly talks aboutB．
A．who developed the device
B．how the device works
C．several possible uses for the devices
D．how much electricity the device can produce
67．What is the disadvantage of the experimental version of the device？C
A．It is too heavy for the walker to bear
B．It is too complex for people to use
C．It is too expensive for most people to afford
D．It will slow down one's walking speed．
68．Compared with the device designed by Larry Rome，this new deviceA．
A．produces power without adding more loads to the walker
B．can produce more power in a much shorter time
C．needs to be equipped with a battery
D．can help the walker walk faster
69．From the passage，we can learn that the electrical device canD．
A．help housewives operate the washing machine
B．make it much easier for us to go online
C．produce more electricity than that invented by Larry Rome
D．be applied to operate heart pacemakers
70．What would be the best title for the passage？C
A．First device powered by walking will soon be on the market
B．Advanced technology brings in a new way to operate heart pacemakers
C．Device gives new meaning to the idea of power walking
D．Human energy will become a main source of electricity．

9．If you don't know what you want，you might get something you don't want in the end．
If you don't know what you want，you mightend up getting what you don't want．

试题分类