---It’s a wonderful party.—It’s very nice of you to come.___.

A. Please do make yourself at home   B.Please enjoy yourself

C.Help yourself      D.Have a good time

America is growing older. Fifty - eight years ago, only 4 out of every 100 people in the United States were 65 or older. To day, 10 out of every 100 Americans are over 65. The aging of the population will affect（影响）American society in many ways—education, medicine, and business. Quietly, the graying of America has made us a very different society—one in which people have a quite different idea of what kind of behavior（行为） is suitable（合适）at various , ages.

　　A person s age no longer tells you anything about his/her social position, marriage or health. There’s no longer a particular year in which one goes to school or goes to work or gets married or starts a family. The social clock that kept us on time and told us when to go to school, get a job, or stop working isn’t as strong as it used to be. It doesn’t surprise us to hear of a 29 - year - old university president or a 35 - year -old grandmother, or a 70 year - old man who has become a father for the first time. Public ideas are changing.

　　Many people say, “I am much younger than my mother— or my father— was at my age. ”No one says“Act your age” any more. We’ve stopped looking with surprise at older people who act in youthful ways.

　　67．It can be learnt from the text that the aging of the population in America ________ .

　　A. has made people feel younger

　　B. has changed people’s social position

　　C. has changed people’s understanding of age

　　D. has slowed down the country’s social development

　　68．The underlined word “one” refers to ________ .

　　A. a society　　　　　　　　　　　B. America

　　C. a place　　　　　　　　　　　　D. population

　　69．“Act your age” means people should ________ .

　　A. be active when they are old

　　B. do the right thing at the right age

　　C. show respect for their parents young or old

　　D. take more physical exercise suitable to their age

　　70．If a 25 - year - old man becomes general manager of a big firm, the writer of the text would most probably consider it ________ .

　　A. normal　　　　　　　　　　　　B. wonderful

C. unbelievable　　　　　　　　　　D. unreasonable

Please remain ______; the winner of the prize will be announced soon.

A. seating          B. seated               C. to seat          D. to be seated

My ______ of this weekend’s activity is going out with some good friends.

A．idea               B．opinion              C．mind                D．thought

___ the help of his teacher, he has passed the English exam.

A. Under    B. In     C. Below     D. With

—What fruit is in season now?

—Grapes and peaches,       .

A.I know                      B.I think               C.I see                  D.I feel

——What sort of house do you want to have?  Something big?

——Well, it          be big--that’s not important.

A. mustn’t    B. needn’t    C. can’t      D. won’t

This is the girl______father was just spoken by us.

A.whose                       B.of whom                   C.of whose                   D.to whom

George Bush______was a politician,like his son George W.Bush.

A.the older                   B.older                         C.the elder                    D.an elder

You’re not allowed _______ that land.

A. setting foot on                                    B. to set foot on       

C. to set feet in                                      D. setting feet in