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数形结合思想是一种重要的数学思想,它的实质就是根据数与形之间的对应关系,通过数与形的相互转化来解决问题。用数形结合思想解题能简化推理和运算,具有直观、快捷的优点。请简要谈谈数形结合思想在解哪些类型的问题时可以发挥作用,使问题得到更好的解决。

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In Grade Eight I took physics.In one test I get 51.only 36 percent of the answer correct.I failed the 52.next one,either.I started to think that maybe l was 53.not good at it.However,1 was not lucky enough t0 54.have a teacher which didn’t take my bad grades as a 55.judgment of my abilities,but simply like an indication 56.how I should study harder.He pulled me aside and told 57.me that he knew I could do better.He permitted to retake58.the test,and l was pulled my grade to an A.This is what 59.I discovered:just because a subject is difficulty to learn60.it doesn’t mean you are not good at it. 59()

马斯洛将人的需要划分为生理、安全、社交、()和自我实现等五个层次。

ANow satellites are helping to forecast the weather.They are in space,and they can reach any part of the world.The satellites take pictures of theat mosphere(大气),because this is where the weather form.They send these pictures to the weather stations.So meteorologists(气象学家)can see the weather of any part of the world.From the pictures,the scientists can often say how the weather will change.Today,nearly five hundred weather stations in sixty countries receive satellite pictures.When they receive new pictures,the meteorologists compare them with earlier ones.Perhaps they may find that the clouds have changed during the last few hours.This may mean that the weather on the ground may soon change,too.In their next weather forecast,the meteorologists can say this.So the weather satellites are a great help to the meteorologists.Before satellites were invented,the scientists could forecast the weather for about 24 0r 48 hours.Now they can make good forecasts for three or five days.Soon,perhaps,they may be able to forecast the weather for a week or more ahead. Meteorologists forecast the weather().

()the bad weather,the swimming match had been put off.

A. Because
B. Thanks to
C. With the help of
D. As to

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