Hannah Taylor is a schoolgirl form. Manitoba,Canada.One day, when she wasfive years old,she was walking with her mother in downtown Winnipeg.They saw aman 36    out of a garbage can.She asked hermother why he did that and her mother said that the man was homeless andhungry.Hannah was very  37  .She couldn't understand whysome people had to live their without shelter or enough food.Hannah started tothink about how she could 38   ,but,of course,there is not a lot onefive-year-old can do to solve(解决)the problem ofhomelessness.      

Later ,when Hannah attended school, she sawanother homeless person. It was a woman,  39  an old shopping trolley（购物车）which was piled with  40 .It seemed that everything the woman owned was in them. This made Hannah verysad, and even more 41 to do something.She had been talking toher mother about the lives of homeless people 42 theyfirst saw the homeless man. Her mother told her that if she did something tochange the problem that made her sad, she wouldn’ t 43 as bad.

Hannah began to speak out about the homelessnessin Manitoba and then in other provinces.She hoped to 44 her message ofhope and awareness.She started the Ladybug Foudation ,an organization aiming atgetting rid of bomekssacss. She began to “Big Bosses” lunches, where she wouldtry to persuade local business Leaders to 46 to the cause.She alsoorganized a fundraising(募捐)drive in “Ladybug Jars” to collect everyone`s spare change during “MakeChange” month. More recently, the foundation began another 47 calledNational Red Scarf Day-a day when people donate $20 and wear red scarves in supportof Canada`s 48 and homeless.

There is an emergency shelter in Winnipegcalled “Hannah`s Place”,something that Hannah is very 49 of. Hannah`sPlace is divided into several areas,providing shelter for people when it is socold that 50 outdoors can meandeath.In the more than five years since Hannah began her activities,shehasreceived a lot of 51 .

For example, she received the 2007 BRICKAward recognizing the  52   of young people to change the world. But  53    all this, Hannah still has the  54    life of a Winnipeg schoolgirl, except thatshe pays regular visits to homeless people.

Hannah is one ofmany examples of young people who are making a  55   in the world.You can,too!

Every animal sleeps,but the reason for thishas remained foggy.When lab rats are not allowed to sleep,they die within amonth. 71One idea is that sleep helps us strengthennew memories. 72 We know that,while awake,fresh memories are recorded by reinforeing (加强)connections between braincells,but the memory processes that takeplace while we sleep have been unclear.  Support is growing for a theory thatsleep evolved so that connections between neurons(神经元)in the brain can be weakenedovernight,making room for fresh memories to from the next day 73 Now we have the most direct evidence yet that he is right. 74 Thesynapses in the mice taken at the end ofa period of sleep were 18 per cent smaller than those taken beforesleep,showing that the connections between neurons weaken while sleeping. If Tononi`s theory isright,it would explain why,when we miss a night`s,we find it harder the nextday to concentrate and learn new information-our brains may have smaller roomfor new experences. Their research also suggests how we may build lasting memories overtime even though the synapscs become thinner.The team discovered that somesynapses seem to be protected and stayed the same size. 75 “You keep what matters,”Tononi says. A. We should alsotry to sleep well the night before. B. Ti’s as if thebrain is preserving its most important memories. C. Similarly, whenpeople go for a few days without sleeping, they get sick. D. The processestake place to stop our brains becoming loaded with memories. E. That’s whystudents do better in tests if they get a chance to sleep after learning. F. “Sleep is theprice we pay for learning,” says Giulio Tononi, who developed the idea. G. Tononi’s teammeasured the size of these connections, or synapses, in the brains of 12 mice.

假设你是红星中学高三学生李华，请根据以下四幅图的先后顺序，写一篇英文周记，记录毕业前夕你们制作以“感恩母校”为主题的毕业纪念视频的全过程。注意：词数不少于60。提示词：视频video

What does theauthor think of the safety problem of super intelligent machines?

Machines withspecific purposes are associated with living things partly because they mightbe able to ???????.

According tosome researchers, we can use firewalls to

Hollywood’s theory that machines with evil(邪恶) minds will drive armies ofkiller robots is just silly. The real problem relates to the possibility thatartificial intelligence(AI) may become extremely good at achieving somethingother than what we really want. In 1960 a well-known mathematician NorbertWiener, who founded the field of cybernetics（控制论）, put it this way: “If we use, to achieve our purposes, a mechanicalagency with whose operation we cannot effectively interfere(干预), we had better be quite surethat the purpose which we really desire.”

What is the purpose of the passage?

Herd immunity works well when ____________.

What is the main reason for thecomeback of measles?

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