Many teenagers feel lonely as if no one understands them and the changes they are going through.     1     Day by day, everything seems different, yet the same. Life never seems to be going fast enough; yet, in other ways, like a race car, life seems to be rushing too fast and even going out of control.     2    别的人也有过同感吗?

These feelings are a common part of adolescence the time of life between child and adult. And,     3     though it may sometimes be difficult to believe, you are not alone —every adult has gone through adolescence, and     4    你的朋友和你一样正经历着这个阶段。It is common for teenagers to feel lonely and misunderstood.     5     These feelings can be thought of as growing pains —the difficulties that teenagers face as they grow to adults.

For example, there are public advertisements, which    1    (鼓励) citizens to participate in improving their neighborhood, protecting the environment, and helping other people. Over the last     2    (十年) , the government has sponsored advertisements to    3    (教育)the public on fighting AIDS, saving water, helping the poor, giving up smoking, etc. These advertisements have helped to increase public    4    (知识)about topics that used to be i    5    (忽略)by most people, and this has made our society a better place for everyone.

Christopher Reeve engaged in a wide range of exercises designed to rebuild muscle, and made remarkable p    1    . Shortly after, he managed to return to his film c    2     by directing, producing and even starring in films. He also wrote a biography and returned to his charity work. Reeve became a     3    (热爱的，具有强烈信念的) and energetic advocate for people with back injuries and    4     (残疾), collecting millions of dollars in    5    (支持) of medical research.

China’s space programme started later than those of Russia and the US, but it has made great     1     in a short time. China became the third country in the world to     2     send humans into space in 2003, when Yang Liwei successfully     3     Earth in the Shenzhou 5 spacecraft. Then Shenzhou 6 and 7 completed     4     second manned orbit and the first Chinese spacewalk,     5     by the vehicle Jade Rabbit being sent to the moon to study its surface. After that, China     6     the Tiangong 2 space lab into space and Tianzhou1 to dock     7     it. This     8     one step further in China’s plan to     9     a space station in the future. More recently, China has sent Chang’e 4 to explore the surface of the far side of the moon to make     10     and observations.