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A.prospective
B.respective
C.depiction
D.perspective
答案
更多“It is far more effective for parents to allow for the child's _________ and let hi”相关的问题
第1题
A.further
B.far
C.more far
D.ahead
第2题
The immediate problem is poverty. Most of Africa is urbanising at a lower level of income than other regions of the world did. That means there's little money around for investment that would make cities liveable and more productive. Without upgrades and new capacity, bridges, roads and power systems are unable to cope with expanding populations. With the exception of South Africa, the only light rail metro system in sub-Saharan Africa is in Addis Ababa, Ethiopia. Traffic jam leads to expense and unpredictability, things that keep investors away.
In other parts of the world, increasing agricultural productivity and industrialisation went together. More productive farmers meant there was a surplus that could feed cities; in turn, that created a pool of labour for factories. But African cities are different. They are too often built around consuming natural resources. Government is concentrated in capitals, so is the money. Most urban Africans work for a small minority of the rich, who tend to be involved in either cronyish (有裙带关系的) businesses or politics. Since African agriculture is still broadly unproductive, food is imported, consuming a portion of revenue.
So what can be done？ Though African countries are poor, not all African cities are. In Lagos, foreign oil workers can pay as much as 65,000 dollars per year in rent for a modest apartment in a safe part of town. If that income were better taxed, it might provide the revenue for better infrastructure. If city leaders were more accountable to their residents, they might favour projects designed to help them more. Yet even as new roads are built, new people arrive. When a city's population grows by 5% a year, it is difficult to keep up.
76.What do we learn from the passage about cities in sub-Saharan Africa____
A.They have more slums than other cities in the world.
B.They are growing fast without becoming richer.
C.They are as modernised as many cities elsewhere.
D.They attract migrants who want to be better off.
77.What does the author imply about urbanisation in other parts of the world____
A.It benefited from the contribution of immigrants.
B.It started when people's income was relatively high.
C.It benefited from the accelerated rise in productivity.
D.It started with the improvement of peopled livelihood.
78.Why is sub-Saharan Africa unappealing to investors____
A.It lacks adequate transport facilities.
B.The living expenses there are too high.
C.It is on the whole too densely populated.
D.The local governments are corrupted.
79.In what way does the author say African cities are different____
A.They have attracted huge numbers of farm labourers.
B.They still rely heavily on agricultural productivity.
C.They have developed at the expense of nature.
D.They depend far more on foreign investment.
80.What might be a solution to the problems facing African cities____
A.Lowering of apartment rent.
B.Better education for residents.
C.More rational overall planning.
D.A more responsible government.
第3题
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.()
第4题
same amount of time, say exercise researchers in Britain. But walks of any length beat sitting at home with your feet up and watching television. They stress. Some researchers in Britain reached these conclusions after putting 56 couch potatoes through an 18 week course of daily walks. They found that longer walks produce the most beneficial changes to the composition of blood fats, but walks of any length improve the fitness of the heart.
In the study, the normally inactive subjects were divided into three roughly equal groups. The "long walker" took a hike of between 20 and 40 minutes every day. "Intermediate walkers" had two rounds of jogging of 10 to 15 minutes, and "short walkers" did three stints of 90 to 110 minutes. The controls sat at home, as usual.
At the start and end of the 18 weeks, the health and fitness of each group were measured and it was found that the long walkers were healthiest, as measured by altered fat profiles in their blood. At the end, each liter of blood from the long walkers contained an average 0.05 grains less apolipoprotein(阿朴脂蛋白) II, a "bad" fat that is linked with heart disease. This was more than twice the drop seen in the intermediate walkers, and five times that in short walkers. In the controls, the level of this fat stayed the same. The drop in apolipoprotein II in the long walker was matched by a rise in the blood level of apolipoprotein I, a "good" fat that is associated with smooth arteries.
1、According to the researchers, ______ is least beneficial to your health.
A、taking a lengthy hike once a day
B、going shopping several times every day
C、doing jogging every morning
D、sitting in the sofa watching TV every evening
2、"Couch potato" in paragraph 2 is used to refer to a kind of ______.
A、farmers
B、vegetables
C、movie-goers
D、TV viewers
3、Which of the following statement is FALSE？()
A、Longer walks benefit our composition of blood fats
B、The subjects in the study all often watch TV
C、Only longer walks benefit our health
D、The subjects in the study may not like exercises
4、The subjects are divided into ______ groups.
A、four
B、three
C、two
D、one
5、Why is long walk beneficial to our heart？()
A、It leads to the drop in apolipoprotein I
B、It leads to the drop in apolipoprotein II
C、It keeps us from watching TV
D、It helps us lose weight
第5题
Many people like to think of our present system of schooling as providing plenty of steps up the ladder of success for clever children.It would be good to think that no one who is really bright can be missed out when the state system is apparently so thorough.It is obvious, for instance, that many children from less rich homes reach university or do well in other ways.
Unfortunately, we now have plenty of evidence that many children of every level of ability do much less well than they could.For instance, during the years of national military service it was possible to test the intelligence of all male 18-20 year olds.Half of those soldiers who were placed in the two highest ability groups had left schools at 15.
It has also been shown that the percentage of working class children going to university is almost the same now as it was in 1939.One study of 5000 children from birth to 21 years old indicated that up to half the bright pupils from working class homes left school when they reached 16 years old.Moreover, there is no difference in intelligence between the sexes, but far more boys than girls stay in education after 16.
It is clear from this and much other evidence that many children are still leaving school too early to benefit from the prizes------money, social respectability, and interesting jobs, which higher education gives.It is clear too that the reasons why such children leave have much to do with their social circumstances.Their parents often need the extra money another wage-owner can bring in; they do not value education for itself because their own was probably dull and unhappy.It is not so much that they force their sons and daughters to leave school, rather that they tend to say, “It's up to you”.
1.It is hoped that ROSLA will give all children （）.
A.a more enjoyable time at school
B.the same chances in society
C.the right to a better school
D.higher scored in intelligence tests
2.People would like to think that （）.
A.equal numbers of poor and rich children reach university
B.those with the least money get the best education
C.intelligent children are always chosen by the system
D.only clever children do well
3.Working class children are felt to be at a disadvantage because （）.
A.many of the clever ones leave school early
B.fewer go to university than ever before
C.more than half leave school when they are 16
D.fewer boys than girls stay at school after 16
4.Many children leave school early because （）.
A.their social circumstances make them unhappy
B.they have to work to support their family's income
C.their school is a dull and unhappy place
D.their parents don't allow them to make their own decisions
5.This article shows that equal opportunity in education （）.
A.is a thing of the past
B.has not yet been achieved
C.is there for those who merit it
D.has greatly improved our society
第6题
A.went far away
B.were far away
C.had been far away
D.was far away
