You may go to karaoke or disco clubs with your friends during the summer holidays. But be careful. In these   41   places you may see people selling small, colourful pills. Make sure you do not try them.
The seller   42    say they are safe and can help you enjoy yourself or   43    from sadness. They may even offer you a free   44  , and tell you that everybody is using   45  .But you must be alert to the   46   that these drugs could destroy your life.
When you put them into your body, often   47   swallowing, breathing in or injecting, drugs find their way into your brain.
Drugs may either speed up  48  slow down your senses. Their effects are different depending on body size, shape, and chemistry.  49   it can make you feel good at first, a drug can do a lot of   50   to your body and brain.
One of the most popular drugs in nightclubs is the so-called head-shaking or ecstasy pill. The drug hits users with a fast high, 51   them feel powerful and full of  52  . Heart rate, breathing and blood pressure 53  - risking damage to your nervous system. Marijuana (大麻) is a   54   used illegal drug. It is called the gateway drug, because using it sometimes  55   harder drugs. It is mostly smoked in a cigarette.
There is   56   risk related to taking drugs that must be   57  . Sharing a needle to inject a drug puts a user at a very 58   risk of being affected with HIV.
Drugs may appear in many different   59 , some with cool names, but taking them could   60   your health forever.

When other nine-year-old kids were playing games, she was working at a petrol station. When other teens were studying or going out, she struggled to find a place to sleep on the street. But she overcame these terrible setbacks to win a highly competitive scholarship and gain entry to Harvard University. And her amazing story has inspired a movie, “Homeless to Harvard：The Liz Murray Story” , shown in late April.
Liz Murray , a 22-- year-- old American girl, has been writing a real--life story of willpower and determination. Liz grew up in the shadow of two drug--addicted parents. There was never enough food or warm clothes in the house. Liz was the only member of the family who had a job. Her mother had AIDS and died when Liz was just 15 years old. The effect of that loss became a turning point in her life. Connecting the environment in which she had grown up with how her mother had died, she decided to do something about it.
Liz went back to school. She threw herself into her studies, never telling her teachers that she was homeless. At night, she lived on the streets. “What drove me to live on had something to do with understanding, My understanding was that there was a whole other way of being. I had only experienced a small part of society,” she wrote in her book Breaking Night.
She admitted that she used envy to drive herself on. She used the benefits that come easily to others, such as a safe living environment, to encourage herself that "next to nothing could hold me down". She finished high school in just two years and won a full scholarship to study at Harvard University. But Liz decided to leave her top university a couple of months earlier this year in order to take care of her father, who has also developed AIDS. "I love my parents so much. They are drug addicts. But I never forget that they love me all the time."
　　Liz wants moviegoers to come away with the idea that changing your life is "as simple as making a decision".
【小题1】 The word “setback” in the first paragraph most probably means___________?

Some children are natural-born bosses. They have a strong need to make decisions，manage their environment，and lead rather than follow. Stephen Jackson，a Year One student，“operates under the theory of what's mine is mine and what's yours is mine，” says his mother. “The other day I bought two new Star Wars light sabers (剑). Later，I saw Stephen with the two new ones while his brother was using the beat-up ones.”
“Examine the extended family，and you'll probably find a bossy grandparent，aunt，uncle or cousin in every generation. It's an inheritable trait，” says Russell Barkley，a professor at the Medical University of South Carolina. Other children who may not be particularly bossy can gradually gain dominance (支配地位) when they sense their parents are weak，hesitant，or in disagreement with each other.
Whether it's inborn nature or developed character at work，too much control in the hands of the young isn't healthy for children or the family. Fear is at the root of a lot of bossy behavior，says family psychologist John Taylor. Children，he says in his book From Defiance to Cooperation，“have secret feelings of weakness” and “a desire to feel safe.” It's the parents' role to provide that protection.
When a “boss child” doesn't learn limits at home，the stage is set for a host of troubles outside the family. The overly willful and unbending child may have trouble obeying teachers or coaches，for example，or trouble keeping friends. It can be pretty lonely as the top dog if no one likes your bossy ways.
“I see more and more parents giving up their power，” says Barkley，who has studied bossy behavior for more than 30 years. “They bend too far because they don't want to be as strict as their own parents were. But they also feel less confident about their parenting skills. Their kids，in turn，feel more anxious.”
【小题1】Bossy children like Stephen Jackson_________.

This morning, a Virgin Atantin 747 Jumbo Jet became the first commercial airplane to fly on biofuel. The short flight from London to Amsterdam used a blend of 20% babassu(棕榈) oil mixed with 80% conventional jet fuel.
What was really exciting about the flight was the fact that the engine did not have to be altered in any way for the biofuel to work While this is a great initial step in trying to reduce CO₂(carbon-dioxide)emissions(排放)from airplanes. there are a lot of hurdles (障碍)that still need to be overcome.
First and foremost, unlike the normal fuel used to run airplanes (known as Jet A),biofuel freezes at high altitudes. Also, Jet‘A’fuel burns consistently (at the same pace),which means it provides a safe and reliable fuel for long flights--engineers are not sure if biofuel will be able to do the same.
The biggest hurdle to a full biofuel switch is our ability to be able to grow enough crops that can be converted to biofuel. There are two concerns that scientists have in this matter – the first is that the land to grow the extra crops will come from clearing more of our forests and the second is that since it competes with what we eat, the price of food will go up.
However, Richard Branson of Virgin Airlines, envisions that if biofuel starts to replace oil on a greater basis, it will be manufactured from algae（藻类）produced in sewage treatment plants, not from food sources.
Birgin Airlines is not the only one trying to look for alternative fuel sources. Earlier this year, an Airbus A380 used another alternative fuel－a man-made mix of gas-to-liquid, in one of its four engines. The flight was tested by Rolls Royce (manufacturer of jet engines), in partnership with Shell (an oil company). Rolls Royce is also working with Air New Zealand on a similar project.
While a complete switch to alternative fuel may take years, it is very encouraging to see airlines, oil companies and airplane manufacturers all coming together to try to make it happen!
【小题1】．Why does Virgin Airlines try to replace normal fuel with biofuel?

In most languages, a greeting is usually followed by “small talk”. Small talk means the little things we talk about at the start of a conversation. In English-speaking countries people often make small talk about the weather. “Nice day, isn’t it?” “Terrible weather, isn’t it?” But there is something special about small talk. It must be about something which both people have the same opinion about. The purpose of small talk is to let both people agree on something. This makes meeting people easier and more comfortable. People usually agree about the weather, so it is a safe topic for small talk. But people often disagree about religion(宗教) or politics(政治) so these are not suitable topics for small talk. The topics for small talk also depend on where the conversation is taking place. At football matches, people make small talk about the game they are watching. “Great game, isn’t it?” At bus-stops, people may comment on the transport system. “The bus service is terrible, isn’t it?”
【小题1】Small talk is _______________.