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The air we breathe is freely available, without 1. we could not survive more than a few minutes. For the most part, air is available to everyone, and everyone needs it. Some people use the air to sustain them while 2. (sit) around and feel sorry for themselves. 3. breathe in the air and use the energy it provides to make 4. magnificent life. Opportunity is 5. the same way; it is everywhere. It is so freely available that we take it for granted. Yet opportunity alone is not enough to create success; it must 6. (seize) and acted upon in order to have value. 7. many people are so anxious to “get in” on a “ground floor opportunity”, as if the opportunity will do all the work that’s 8. (possible). Just as you need air to breathe, you need opportunity to succeed. However, it takes more than just breathing in the fresh air of opportunity. You must make use of it. That’s not up to the opportunity; that’s up to you. 9. doesn’t matter what “floor” the opportunity is on, but 10. matters is what you do with it.
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What if I took that big jump on my bike?What’s the worst thing that could happen if I go out at midnight?Should try smoking?The teen years can play out like a choose-your-own-adventure novel.
Teenagers must act on an endless parade of choices.Some choices.including smoking.Come with serious consequences.As a result, adolescents often find themselves trapped between their impulsive tendencies（-Just try it!)and their newfound ability to make well-informed and logical choices（-Wait, maybe that’s not such a good idea!）.
So what makes the teenager’s brain so complex? What drives adolescents-more than any other age group-to sometimes make rash or questionable decisions?
If you have ever thought that the choices teenagers make are all about exploring and pushing limits, you are on to something. Experts Experts believe that this tendency marks a necessary period in teen development.The process helps prepare teenagers to confront the world on their own. It is something all humans have evolved to experience-yes, teens everywhere go through this exploratory period.Nor is it unique to people:Even laboratory mice experience a similar stage during their development.
For example，laboratory experiments show that young mice stay close by their mothers for safety. As mice grow．their behavior does too．“When they reach puberty，they’re like，‘I’m gonna start checking out how this environment looks without my mom，…explains Beatriz Luna,of the University of Pittsburgh．
As a developmental cognitive neuroscientist，Luna studies those changes that occur in the brain as children develop into adults．She and other researchers are showing how the teen experience can lead to powerful advantages later in life．Take mice again：Young mice that explore most tend to live longest——that is，unless a cat eats them，Luna adds．
1.What is the best title for the text?
A．Teenagers make endless choices
B．The teenage brain drives them to be different
C．How the teenage brain develops
D．Researches about the teenagers
2.What does the underlined sentence in paragraph 4 mean?
A．It means “you are wrong”.
B．It means“you lose your way”．
C．It means“you get the point”．
D．It means“you are off the point”.
3.According to the text,the teenager who explores most wiIl
A．make no mistakes in his life．
B．have advantages over others.
C．loSe his confidence even his life.
D．experience no failure and live Iongest.
4.What does the writer want to tell us by taking mice for example？
A．young mice try to look for safety.
B．Young mice like to stay with their mothers.
C．Mice also experience a period to explore the world.
D．Mice experience different stages.
5.What may the text discuss in the next part?
A．How call a teenager make right choices
B．Why the parents shouldn’t allow teenagers to smoke
C．What has been discovered in the lab experiment．
D．What really goes on in the teenage brain.
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…That’s my second piece of advice, very simple: Don’t make excuses. Take responsibility not just for your successes; take responsibility where you fall short as well.
Now, the truth is, no matter how hard you work, you’re not going to ace (取得好成绩) every class. You’re not going to succeed the first time you try something. There are going to be times when you screw up (弄糟). There will be times where you hurt people you love. There will be times when you make a mistake and you stray (偏离) from the values that you hold most deeply.
And when that happens, it’s the easiest thing in the world to start looking around for somebody else to blame. Your professor was too hard; the coaches were playing favorites; your friend just didn’t understand.
No, but this is an easy habit to get into. You see it every day in Washington — every day -—folks calling each other names, making all sorts of accusations on television. Everybody is always pointing a finger at somebody else. You notice that?
Now, this community could have easily gone down that road. This community could have made excuses — well, our kids have fewer advantages, our schools have fewer resources — how can we compete? You could have spent years pointing fingers— blaming parents, blaming teachers, blaming the principal , blaming the superintendent.
But that’s — Class of 2010, I want you to pay attention on this because that’s not what happened. Instead, this community was honest with itself about where you were falling short. You decided to do better, push your kids harder, open their minds wider, expose them to all kinds of ideas and people and experiences.
So, graduates, I hope you’ll continue those efforts. Don’t make excuses. And I hope that wherever you go, you won’t narrow the broad intellectual and social exposure you’ve had here at Kalamazoo Central — instead, seek to expand it. Don’t just hang out with people who look like you or share your political views. Broaden your circle to include people with different backgrounds and life experiences, because that’s how you’ll end up learning what it’s like to walk in somebody else’s shoes. That’s how you’ll come to understand the challenges other people face.
And this is not just an academic exercise. It’s a way to broaden your ambit (范围) of concern and learn to see yourselves in each other.
—adapted from US President Barack Obama’s graduation ceremony speech at the Kalamazoo Central High School.
1. The underlined words “fall short” in Paragraph 1 probably mean .
A. make a decision B. begin to experience something
C. have someone else to blame D. fail to reach a standard
2. The underlined word “this” in Paragraph 4 refers to .
A. misunderstanding your friends B. straying from the values you hold
C. making accusations on television D. blaming someone else for your mistake
3. We can infer from Paragraphs 5 and 6 that the community .
A. has got used to making excuses B. has lived up to its responsibility
C. is satisfied with itself D. provides fewer resources than it used to
4. In the last two paragraphs, Obama calls on the graduates to .
A. welcome different ideas, people and experiences
B. participate in as many social activities as they can
C. make friends with people who share their political views
D. be honest and concerned about the community
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Dad loved children. And he always wanted a 21 family. Eventually, he got what he wanted with twelve children in the family. Without fail, he would show us all to visitors.
Once, Dad 22 presented the first three children in the family, Ann, Mary and Ernestine, to some visitors. Then he picked up a fourth child, and said, “And this is our 23 model, complete with all the improvements. And don’t think that this is all, we are 24 the 1953 model some time next month.”
But what he 25 most was taking us out for a drive. On one occasion a man in a village we were passing through shouted 26 that he had seen eleven people in our car, not 27 Mum and Dad. 28 , Dad called out over his shoulder, “You 29 the second baby up from the front here, Mister.”
Another time, Dad told us this joke, though we were not sure whether he was telling us the 30 . Mum, who was a psychologist, once went to give a lecture and left Dad in charge of the 31 . When Mum returned, she asked him if everything had been OK. He said everything was 32 except that one of the children had been taught a lesson because he had been 33 . When he pointed at the child that had been 34 Mum looked at him calmly and said, “That’s not one of ours, dear. He 35 next door.”
1. A．rich B．lovely C．close D．large
2. A．surprisingly B．nervously C．generously D．proudly
3. A．dearest B．smallest C．latest D．youngest
4. A．ordering B．selling C．expecting D．improving
5. A．hated B．enjoyed C．cared D．hoped
6. A．doubtfully B．excitedly C．calmly D．directly
7. A．counting B．naming C．showing D．reading
8. A．Immediately B．Carefully C．Angrily D．Easily
9. A．saw B．missed C．forgot D．left
10. A．truth B．story C．adventure D．accident
11. A．lecture B．house C．office D．activity
12. A．expensive B．regular C．correct D．fine
13. A．troublesome B．careless C．active D．quiet
14. A．found B．caught C．punished D．wounded
15. A．goes to B．belongs to C．works D．plays
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