The world's oldest person, Ms. Baines, died. She celebrated her 115th birthday with congratulations from Barack Obama, President of the United States. Over her life she lived through the terms of 21 US presidents.
Gertrude Baines passed away peacefully in her sleep at the Western Convalescent Hospital in Los Angeles, where she had lived for her last ten years. Emma Camanag, the hospital's leader said she was a respectable lady. "It is really an honor for the hospital to take care of her over the last 10 years and we will greatly miss her, It is just like we have lost a relative, " said Emma.
Ms. Baines, who was born in Shellman, Georgia, in 1894, had no living relatives. She grew up in the southern US during difficult times. During that time, African American people were required to use separate, often poor, public services. She married young and later divorced(离婚)．Her only child, a daughter, was born in 1909 and died of a terrible disease at the age of 18. Ms. Baines worked as a maid（女佣） in Ohio before moving to Los Angeles where she lived on her own until she was well over 100.
She once told an interviewer, "As to the secrets of long life, I do not have any disappointments in my own life."
She gained some fame when she voted for Mr. Obama in the US presidential election, saying she supported him "because he's for the colored people". It was only the second time in her life she had voted, the first time being for John F. Kennedy.
Ms. Baines became the world's oldest person in January. Japanese woman, Kama Chien, 114, has now taken over the title.
Ms, Baines voted for Mr. Obama because he______.

A．was very popular in the hospital

B．did good things for African Americans

C．did even better than John F. Kennedy

D．congratulated her on her birthday

It can be inferred(推断) from the passage that______.

A．Ms. Baines didn't like any presidents except Mr. Obama and John F. Kennedy

B．Ms. Baines' daughter died many years before her husband

C．Japanese woman Kama Chien is the second oldest in the world now

D．a positive attitude towards life is the main secret of .Ms. Baines' long life

Which of the following is NOT true according to the passage?

A．Ms. Baines liked to live alone.

B．Ms. Baines died in a hospital in Los Angeles.

C．Ms. Baines and her husband had only one child.

D．Ms. Baines used to serve' others in Ohio.

The passage is mainly about ______.

A．how Ms, Baines lived for so long

B．why Ms. Baines voted for Mr. Obama

C．the world's oldest person, Ms. Baines

D．Ms. Baines and President Obama .