—I have just received another message, telling me I have won a big prize.

—Don't jump on it. You ________.

A．should be cheated                      B．are being cheated

C．are cheating                           D．should have been cheated

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.

Home to me means a sense of familiarity and nostalgia(怀旧). It's fun to come home. It looks the same. It smells the same. You'll realize what's changed is you. Home is where we ran remember pain, live, and some other experiences; We parted here; My parents met here; I won three championships here.

If I close my eyes, I can still have a clear picture in mind of my first home. I walk in the door and see a brown sofa surrounding a low glass-top wooden table. To the right of the living room is my first bedroom. It's empty, but it's where my earliest memories are.

There is the dining room table where I celebrated birthdays, and where I cried on Halloween-when I didn't want to wear the skirt my mother made for me. I always liked standing on that table because it made me feel tall and strong. If I sit at this table, I can see my favorite room in the house, my parents' room. It is simple: a brown wooden dresser lines the right side of the wall next to a television and a couple of photos of my grandparents on each side. Their bed is my safe zone. I can jump on it anytime - waking up my parents if I am scared or if I have an important announcement that cannot wait until the morning.

I'm lucky because I know my first home still exists. It exists in my mind and heart, on a physical property(住宅) on West 64th street on the western edge of Los Angeles. It is proof I lived, I grew and I learned.

Sometimes when I feel lost, I lie down and shut my eyes, and I go home. I know it's where I'll find my family, my dogs, and my belongings. I purposely leave the window open at night because I know I'll be blamed by Mom. But I don't mind, because I want to hear her say my name, which reminds me I'm home.

1.Why does the author call her parents' bed her "safe zone"(Paragraph 3)?

A．It is her favorite place to play.

B．Her needs can be satisfied there.

C．Her grandparents' photos are lined on each side.

D．Her parents always play together with her there.

2.What can be learned from the passage?

A．The old furniture is still in the author's fist bedroom.

B．The author can still visit her first physical home in Los Angeles.

C．The author's favorite room in her first home is the dining room.

D．Many people of the author's age can still find their first physical homes.

3.Sometimes when she feels lost, the author will _______.

A．Open the window at night

B．lie down in bed to have a dream

C．try to bring back a sense of home

D．go to Los Angeles to visit her mom

4.What is the author's purpose of writing this passage?

A．To express how much she is attached to her home.

B．To declare how much she loves her first house.

C．To describe the state of her family.

D．To look back on her childhood.

The triathlon(铁人三项运动) promises to be one of the most popular Olympic sports.Recently it has drawn huge crowds attracted by athletes swimming 1,500m，cycling 40km，then running 10km without stopping.But what makes an attractive 17?year?old girl give up everything for the doubtful pleasure it offers?

Melanie Sears has not yet learnt those often?repeated phrases about personal satisfaction，mental challenge and higher targets that most athletes use when asked similar questions.“You swim for 1,500m，then run out of the water and jump on your bike，still wet.Of course，then you freeze.When the 40km cycle ride is over，you have to run 10km，which is a long way when you’re feeling exhausted.But it’s great fun，and all worth it in the end，” she says.

Melanie entered her first triathlon at 14 and she won the junior section.Full of confidence，she entered the National Championships，and although she had the second fastest swim and the fastest run，she came nowhere.“I was following this man and suddenly we came to the sea.We realised then that we had gone wrong.I ended up cycling 20 kilometres too far.I cried all the way through the running.”

But she did not give up and was determined that she never will.“Sometimes I wish I could stop，because then the pain would be over，but I am afraid that if I let myself stop just once，I would be tempted(诱惑) to do it again.”Such doggedness draws admiration from Steve Trew，the sport’s director of coaching.“I’ve just been testing her fitness，” he says, “and she worked so hard on the running machine that it finally threw her off and into a wall.She had given it everything，and she just kept on.”

Melanie was top junior in this year’s European Triathlon Championships，finishing 13th.“I was almost as good as the top three in swimming and running，but much slower in cycling.That’s why I’m working very hard at it.” She is trying to talk her long?suffering parents，who will carry the ￡1,300 cost of her trip to New Zealand for this year’s world championships，into buying a ￡2,000 bike，so she can try 25km and 100km races later this year.

But there is another price to pay.“I don’t have a social life，”she says.“After two hours’ hard swimming on Friday night，I just want to go to sleep.But I phone and write to the other girls in the team.” What does she talk about？Boys？Clothes？“No，what sort of times they are achieving.”

1.How does Melanie differ from other athletes，according to the writer?

A．She worries less than they do.

B．She expresses herself differently.

C．Her family background is not like theirs.

D．Her aims are different from theirs.

2.What upset Melanie during the National Championships?

A．She was tricked by another competitor.

B．She felt she had let her team?mates down.

C．She made a mistake during part of the race.

D．She realized she couldn’t cycle as fast as she thought.

3.What is Melanie trying to persuade her parents to do?

A．Buy an expensive bike for her.

B．Give her half the cost of a bike.

C．Let her compete in longer races.

D．Pay for her to go to New Zealand.

4.What does Melanie say about her relationships with her team?mates?

A．She would like to see them more often.

B．She only discusses the triathlon with them.

C．She thinks they find her way of life strange.

D．She dislikes discussing boys or clothes with them.

Beach volleyball is one of those sports that can be an exciting game to play and watch, or, can just be about some friends getting together to have a great time. It’s really easy, and all you need is sand, a net and a group of people, of any age or fitness level, who want to have fun.
Beach volleyball can be played with as few as two people on each team, making a total of four people. However, if you are less skilled and experienced in the game, it will be easier to play with a larger team. The more players you have, the less ground each person will be responsible(负责)for covering and the more time they will have to recover in between shots. If you only have a few players, each of you will get quite a workout running for the ball after each volley. If you are looking for that relaxing, fun, low-key experience, choose larger teams.
Beach volleyball is similar(相似)to regular volleyball in its rules. However, even experienced volleyball players do not realize how much more difficult it is to run and jump on sand. Since it is harder to move quickly on sand than a hard ground, play will be much slower than regular volleyball on a playground. When a player trains for beach volleyball, he will focus(专注)on building lower body strength as well as upper body. While he needs to be able to hit the ball with a great deal of power and accuracy(准确性), strengthening his legs is extremely important.
Whether you are in it for the competition, or just to have a great time with your friends, beach volleyball can be very exciting and fun. You may even start out with friends and fall in love with the sport.
【小题1】When you join a large beach volleyball team, you’ll_________.