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.

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.

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.

10 . During adolescence,     1    很多青少年感到孤独. Life never seems to be going fast enough, but in other ways, life seems to be rushing too fast. Everything seems different, yet the same, day by day.

Although it may be difficult to believe, these feelings are common for teenagers. These can be thought of as ‘growing pains’—    2    青少年面临的那些困难as they grow to adults.

    3    Teenagers can easily become confused with the changing world inside and outside. They also go through great physical changes, such as growing taller and their voices getting deeper.     4    Along with these physical changes, there come many psychological changes, too. But girls and boys tend to be different in this regard.

When it comes to society, teenagers struggle to be independent.    5    They may badly want and need their parents' love, yet feel distant; they may want to be in a group, yet desire independence.

Fortunately, these growing pains do not last long. Everything will turn out right at last.