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A.Hyperglycemia
B.Hypoglycemia
C.Skin reaction
D.Body swelling
听力原文： It's no secret that throughout history common stock has outperformed most financial instruments. If an investor plans to have an investment for a long period of time, then their portfolio should be comprised mostly of stocks ; however, investors who don't have this kind of time should diversify their portfolios. For this reason, the concept of "asset allocation" was developed. Asset allocation is an investment portfolio technique that aims to balance risk and create diversification by dividing assets among major categories. The underlying principle of asset allocation is that the older a person gets, the less risk he or she should face. After you retire you may have to depend on your savings as your only source of income.
28. Throughout history, what kind of stock has outperformed most financial instruments？
29.What is the purpose of asset allocation？
30.What is the principle underlying the concept of asset allocation？
(28)
A．preferred stock
B．common stock
C．concept stock
D．cynical stock
Amazingly，though so many people regret the rising dropout rate，our schools continue to lack formal plans—or any plans—about students’ motivation.Most schools have no game plans to ensure that students understand that school will be completely necessary.Schools expect the children to act as the school is important，but they never teach them to believe that.
Years ago，families ensured that the offspring recognized the value of school.But in many modern families，the children may fail to recognize the importance of school life just because these families may actually tell the children that school is not important.Since many families are not motivating their children to be interested students，young professionals，like teachers，may need to provide this training.Otherwise，it is likely that the dropout rate will continue to not drop，but only worsen.
Here are some strategies to convince even the most apathetic students that they must stay in school.
Ask students if they will ever need to work：The world has changed.100 years ago，factory work was the booming job，and it required no education.Today，factories are increasingly automated.Most computerrelated jobs require education and at least a high school diploma.
Ask students which century they will be prepared for：In 1900，the most common jobs were farm laborer and domestic servant—education not needed.Now，the most common jobs are office and sales worker—education and diploma usually needed.6 out of 10 people today work in a store or an office.
Ask students to devise a way that the employee could be replaced.For example，the coming trend in fast food is to use computers rather than people to run the restaurant.A prototype is apparently already being tested.The students should discover that most jobs that lack education and diploma requirements will be ripe for automation.
1.By saying “the dropout rate isn’t dropping”，the author means to say that ________.
A、most of the 9th graders can afford to go to school
B、quite a few of the 9th graders can graduate
C、the majority of the 9th graders cannot graduate
D、the minority of the 9th graders can’t graduate
2.The author’s attitude towards the schools is ________.
A、Criticism
B、Praise
C、Ignoring
D、Support
3.With the help of some professionals，________.
A、fewer students may stay in schools
B、some parents will be more convinced of their children’s future
C、the dropout rate in schools may drop
D、all the kids problems should be solved
4.What does the underlined word “offspring” probably mean？
A、friends
B、Students
C、Children
D、Parents
5.According to the passage，________ doesn’t need education.
A、an automation job of today
B、a computerrelated job now
C、an office job at present
D、a domestic servant’s job in 1900
Alzheimer’s Disease: Are We Close to Finding a Cure？
First described in 1906 by Dr.Alois Alzheimer, Alzheimer s disease is the most common form. of dementia, accounting for around 60%–80% of cases.It is characterized by problems with memory, thinking and behavior.Onset is most common in individuals aged 65 and over, although people in their 40s and 50s can develop what is classed as early - onset Alzheimer’s.
Alzheimer’s is a progressive disease, meaning memory loss is mild in the beginning, but it worsens over time to the extent that individuals are unable to have conversations or respond to their surroundings.There are treatments that have been approved by the US
Food and Drug Administration (FDA) for Alzheimer’s.For example, cholinesterase inhibitors and memantine can help treat memory and thinking problems.But these drugs just help manage the symptoms; there is currently no cure for the disease.
Current Alzheimer’s prevalence in the US makes it the 6th leading cause of death, killing more than half a million seniors every year.To put this in perspective, Alzheimer’s disease currently kills more people each year than prostate cancer and breast cancer combined.There is no doubt that scientists across the world are working hard to find ways to prevent, treat and cure this debilitating condition.Hardly a day goes by without coming across a report about how scientists restored memory and learning deficits in Alzheimer’s mouse models, how vitamin D deficiency could increase the risk of developing dementia, and how DNA methylation in the brain is linked to Alzheimer’s.But what have these studies taught researchers about Alzheimer’s so far？
Preventing and Targeting Plaques and Tangles
As with all diseases, knowing exactly what causes Alzheimer’s is key to identifying ways to prevent and treat the condition.Past research has indicated that Alzheimer’s occurs when two abnormal brain structures — plaques and tangles —damage and kill nerve cells, causing the memory, thinking and behavioral problems associated wit
1.Dementia is not a single disease in itself, but a general term to describe symptoms of impairment in memory, communication, and thinking.()
2.The FDA - approved drugs, like cholinesterase inhibitors and memantine, can cure Alzheimer’s disease.()
3.chronic sleep deprivation may cause these abnormal brain structures.()
4.Tangles are fragments of a protein called beta - amyloid, which build up in areas between nerve cells.()
5.As a result of Alzheimer’s research, there are an array of drugs in development that scientists believe have great potential to effectively treat the disease.()
Almost every society has certain traditional ideas about marriage. For example，most societies expect men and women to marry. Most cultures also have traditions about the role and duties of a husband and a wife. Traditionally，the husband is expected to earn a living，and the wife is expected to keep house and raise children.
Many Americans did not follow traditional marriage patterns. For example，a large number of married couples share responsibilities that have been traditionally handled by either the husband or the wife. An increasing number of married women have paying jobs and help support their families financially. In 1940s，about 15 percent of all married women earned money. In the early 1990s，about 60 percent held a full-or part-time job. More and more husbands share responsibilities traditionally handled by women，such as cooking，doing housework，and caring for children.
On the average，men and women stay single longer than they once did. In 1950s，men married at an average age of 23，and women married at an average age of 20. By the mid-1990s，the average marriage age was about 26.5 for men and about 24.5 for women.
An increasing number of people choose not to marry. If a man and a woman wish to avoid marriage，they may decide to live together with no formal obligations to each other. This arrangement is more common among young adults，but some couples of all ages live together without marrying. (239 words)
6. Most societies expect men and women to marry and have traditions about the role and duties of a husband and a wife.
A. T
B. F
7. All Americans would like to follow the traditional marriage patterns.
A. T
B. F
8. The number of married women with a paying job to support their families financially is increasing.
A. T
B. F
9. In the early 1990s，about 15 percent held a full-or part-time job.
A. T
B. F
10. More and more Americans choose to live together without marriage.
A. T
B. F
A.To the Lighthouse
B.The waves
C.Mrs.Dalloway
D.The Common Reader
A.little
B. much
C.few
D.many
