相关试题
The director proposed that we should stop the meeting.
A:stated
B:declared
C:suggested
D:announced
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Study Helps Predict Big Mediterranean Quake
1.Scientists have found evidence that an overlooked fault in the eastern Mediterranean is likely to produce an earthquake and tsunami every 800 years as powerful as the one that destroyed Alexandria in AD 365.
2.Using radiocarbon dating techniques,simulations and computer models,the researchers recreated the ancient disaster in order to identify the responsible fault."We are saying there is probably a repeat time of 800 years for this kind of earthquake,"said Ms Beth Shaw,an earthquake scientist at the University of Cambridge,who led the study. Scientists study past earthquakes in order to deter-mine the future possibility of similar large shocks.
3.Identifying the fault for the AD 365 earthquake and tsunami is important for the tens of millions of people in the region,Ms.Shaw said.The fault close to the southwest coast of Crete last produced a big enough quake to generate a tsunami about 1300,which means the next powerful one could come in the next 100 years,she added in a telephone interview.
4.Ms.Shaw and her colleagues calculate the likely intervals by measuring the motion of either side of the fault to find how often such large earthquakes would have to occur to account for that level of motion,she said.Their computer model suggested an 8 magnitude quake on the fault would pro-duce a tsunami that floods the coastal regions of Alexandria and North Africa,the southern coast of Greece and Sicily all the way up the Adriati to Dubrovnik.This would be similar to the ancient quake in AD 365 that caused widespread destruction in much of Greece and unleashed a tsunami that flooded Alexandria and the Nile Delta likely killing tens of thousands of people,she said.
The earthquake prediction devices developed by Ms.Shaw are being widely used in the world.
A:Right
B:Wrong
C:Not mentioned
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Canadian Parents Win Legal Battle against Homework
Usually it is the children,not the parents,who are reluctant to spend their evenings practicing spelling and learning times tables.______(1)
Shelli and Tom Milley,two lawyers from Calgary,Alberta,launched their highly unu-sual case after years of struggling to make their three reluctant children do school work out of classroom. After waging a long war with their eldest son,Jay,now 18,over his home-work,they decided to do things differently with their youngest two,Spencer,11,and Brit- tany,10.______(2)
It took two years to negotiate the Milleys'Differentiated Homework Plan,which en-sures their youngest two children will never have to do homework again at their current school.______(3)In return,the pupils promise to get their work down in class,to come to school prepared,and revise for tests.They must also read daily and practice their musical instruments at home.
“It was a constant homework battle every night,”Shelli told Canada's Globe and Mail newspaper.“______(4).They shouldn't be working a second shift.”
Two years ago,Chelli began collecting studies on homework,most of which suggest that,particularly for younger grades,there is no clear link between work at home and school performance. Working with the staff at St Brigid Elementary Junior School,she formed a homework committee.______(5)
“We think it's a parent's right to choose what's in our children's best interests”,said Shelli.“But we're thankful the school did the right thing.”
______(3)
A: Homework is becoming a big burden for children.
B: But a Canadian couple have just won a legal battle to free their offspring from home-work after successfully arguing there is no clear evidence it improves academic performance.
C: When no firm changes resulted from the committee,the couple began negotiating the legal document that decided the matter.
D: It is hard to get a weeping child to take in math problems.
E: And being lawyers,they decided to make it official.
F: The two-page plan, signed by the children, parents and teachers, stipulates（约定） that“homework will not be used as a form of evaluation for the children”.
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Improve Your Memory
To many people advancing age means losing your hair,your waistline and your memory.But is it an inescapable fact that the older you get,the less you remember? Well,as time goes by,we tend to blame age for problems that are not necessarily age-related.
When a teenager can't find her keys,she thinks it's because she's distracted or disorganized, but a 70-year-old blames her memory. In fact,the 70-year-old may have been misplacing things for decades一like we all do from time to time.
In healthy people,memory doesn't deteriorate as quickly as many of us think. According to psychologists,as we age,our memory mechanism isn't broken,it's just different.The brain's processing time slows down over the years,though no one knows exactly why.Recent research suggests that nerve cells lose efficiency and that there's less activity in the part of the brain that decides whether to store information or not.But it's not clear that less activity is worse.A beginning athlete is winded. more easily than a trained athlete.In the same way,as the brain gets more skilled at a task,it spends less energy on it.
There are steps you can take to improve your memory,though you have to work to keep your brain in shape.It's like having a good body. You can't go to the gym once a year and expect to stay in top form.
Some memory enhancement experts suggest using the AM principle.Pay attention to what you want to remember. Then give some meaning to it. We remember things when we focus on them, whether we intend to or not. That helps explain why jingles stick in our minds.They are played on loud,flashy TV commercials.They also use rhyme and music to help us remember better.
Basic organization helps us remember the boring stuff. For example,rather than trying to recall a random list of groceries,we can divide them into categories,such as dairy,meat and produce. For important things like keys and money,we can set up a"forget-me-not"spot where we always keep them.
We can also eat to aid our memory power. Whole grains,fruits and vegetables are excellent sources of glucose,the brain's preferred fuel. Another low-tech way to improve memory is to get adequate rest. Sleep may allow our brain time to encode memories.
Interest in friends,family and hobbies does wonders for our memory.A sense of passion or purpose helps us remember. Memory requires us to pay attention to our lives,allowing us to discover in them everything worth remembering.
As we get older, our memory mechanism is broken,and so cannot be the same as it was before.
A:Right
B:Wrong
C:Not mentioned
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Global Warming
Few people now question the reality of global warming and its effects on the world's climate. Many scientists1the blame for recent natural disasters on the increase2the world's temperatures and are convinced that,more than3before,the Earth is at4from the forces of the wind,rain and sun.5to them,global warming is making extreme weather events,6as hurricanes and droughts,even more7and causing sea levels all around the world to8.
Environmental groups are putting9on governments to take action to reduce the 10 of carbon dioxide which is given 11 by factories and power plants,thus attacking the problem at its source. They are in12of more money being spent on research into so-lar,wind and wave energy devices,which could then replace existing power13.
Some scientists,14believe that even if we stopped releasing carbon dioxide and other gases into the atmosphere tomorrow,we would have to wait15hundred years to notice the results. Global warming,it seems,is here to stay.
10._________
A: amount
B: deal
C: number
D: count
