题目内容：

    One time a young man，who hoped to study law，wrote to Lincoln for advice，and Lincoln replied，"If you are determined to make a lawyer of yourself，the thing is more than half done already．Always bear in mind that your own determination to succeed is more important than any other one thing．"

Lincoln knew．He had gone through  it all．He had never，in his entire life，had more than a total of one year's schooling．And books？Lincoln once said he had walked to borrow every book w ithin fifty miles of his home．A fire was usually kept go ing all night in the small house and he read by the light of it．

He walked twenty or thirty miles to hear a speaker and，returning home，he practiced his talks everyw here﹣in the fields，in the woods，before the crowds．He joined several societies and practiced speaking on the topics of the day．

A lack of confidence always troubled him．In the presence of women he was shy and dumb．Even when he was in love with Mary Todd，he used to sit there，nervous and silent，unable to find words，listening while she did the talking．Yet that was the man who，by practice and  home study，made himself into the speaker who debated with the famous speaker Douglas!That was the man who，in Gettysburg address，rose to the heights of eloquence （ 雄辩） that have seldom been achieved in all the human history．

Small wonder that，speaking of his own great barriers and painful struggle，he wrote，"If you are determined to make a lawyer of yourself，the thing is more than half done already．"

1.What does the underlined word"it"（in Paragraph 2）refer to？

A. Earning a fortune．

B. Making a living．

C. Asking for advice．

D. Becoming a law yer．

2.What is the key point of the fourth paragraph？

A. Lincoln's courage．

B. Lincoln's position．

C. Lincoln's progress．

D. Lincoln's eloquence．

3.What is the most vital spirit reflected in Lincoln's story above？

A. Believing  in oneself．

B. Keeping on practicing hard．

C. Overcoming difficulties．

D. Sticking to one's determination．