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　　第一部分 阅读理解(共两节,满分40)
　　第一节(共15小题;每小题2分,满分30分)
　　阅读下列短文,从每题所给的四个选项(A,B,C和D)中,选出最佳选项.
　　A
　　My personal opinion is that there is a built-in mechanism(机制) for teenagers to start to be annoyed by their parents at around the age of 12 when they become “cool”. The parents’ reaction is then negative because they are now hated instead of being admired. Most parents can’t deal with this situation and it drives them crazy. Half of parents get tired and give up all the rules, while the other half become so strict that the kids begin to hate them.
If parents want to help their teenager get through it they need to understand what is going on, which nearly all parents DON’T . This ensures that both parties will fail each other and generally cause annoyance, stress and ill will!
On the other hand, the teenager needs to understand the insecurity(不安) the parent feels as the teenager increasingly has a mind of his or her own. Sure, the kid has never done anything wrong and when the parents make improper rules or start calling that teenager certain qualities that he or she has never had, the teenager’s natural reaction is to fight bacckily for parents, teenagers’ first reaction is rarely to hurt their parents deeply. However, they will do other things, such as drinking, tags, and having poor performance in school as revenge (报复) for the words and actions of their parents. What neither side understands is that they are hurting themselves and each other and the only cause is lacking the ability to consider things calmly for both sides. Therefore, keeping calm is the first step.
　　1.  What is the text mainly about?
A. Why parents and teenagers fight. B. Why some kids behave badly in school.
C. What makes teenagers think negatively? D. How parents should males on teenagers.
　　2.  The underlined word “it’ in Paragraph 1 refers to _____.
A. parents’ failure to rule teenagers B. teenagers’ revenge
C. teenagers’ disrespect to parents D. parents’ insecurity
　　3.  Some teenagers hate their parents because ____.
A. they want to become cool B. their material needs aren’t satisfied
C. they want to challenge their parents D. they get too many rules from their parents
　　4.  About the relationship between parents and teenagers, what can we learn?
A. There’s no good way to deal with their fighting.
B. They should think more for both sides calmly.
C. Teenagers should take more responsibility than parents.
D. Teenagers are likely to admire their parents after 12 years old.
　　B
Space is where our future is — trips to the Moon, Mars and beyond. Most people would think that aside from comets(彗星) and stars, there is little else out there. But, since our space journey started we have left so much trash（垃圾） there that scientists are now concerned that if we don't clean it up, we may all be in mortal （致命的）danger.
The first piece of space junk was created in 1964, when the American satellite Vanguard I stopped operating and lost its connection with the ground center. However, since it kept orbiting around the Earth without any consequences, scientists became increasingly comfortable abandoning things that no longer served any useful purpose in space.
It is estimated that there are now over 500,000 pieces of man-made trash orbiting the Earth at speeds of up to 17,500 miles per hour. The junk varies from tiny pieces of paint chipped off rockets to cameras, huge fuel tanks, and even odd items like the million-dollar tool kit that astronaut Heidemarie Stefanyshyn Piper lost during a spacewalk.
The major problem with the space trash is that it may hit working satellites and damage traveling spacecraft. Moreover, pieces of junk may collide（碰撞） with each other and break into pieces which fal