As you grow rapidly through your teenage years，you will experience a lot of changes．The changes may seem difficult and they may seem to happen quickly．Don't panic！You will deal successfully with them！You are a young adult now!
With more responsibility，you will find more freedom to make your own choices．This is a time to be well informed about your choices so that you can make healthy balanced decisions that will help shape your future．You may already know your career path or you may have no idea at all what you want to do．Both situations are fine！Work hard and the right opportunity will present itself to you．
Young adulthood means greater freedom and more choices．You will probably want to be independent．But try not to shut your family out of your life．You should learn to think of others even though you are old enough to look after yourself．Your family have been with you since you came into this world．
It is also perfectly natural in this time for you to spend more time with your friends than your family．Choose your friends wisely．A true friend will stand by you no matter what happens．
This period is part of the life cycle．There are some people who will be with you throughout life's journey and there will be some people with whom you part and go separate ways．Leaving school can be hard．The reality is that you may not ever see all of your classmates again．
You are a young adult．It is your life．No one can live it for you．The choices that you make from now on will be your choices．So making the right choices will be important to you．Life is for living．Enjoy your life wisely!
40．The best title for this passage would be ．
A．The Choices in Life
B．The Key to Success
C．Say Goodbye to the Past
D．Becoming a Young Adult
41．Who do the underlined words"some people"（Paragraph 5）probably mean？
A．your parents
B．your deskmates
C．true friends
D．your relatives
42．The author thinks teenage years are ．
A．a period of complete freedom
B．too hard for young people to get through
C．an important time for the young to make the right choices
D．a very important period for young students to leave their parents
43．Who is the passage mainly written for？
A．Teenagers
B．Teachers
C．Young parents
D．Adults．