题目

假设你是Peter Smith，请给学生会写封建议书，并说出你建议的理由。 (附学生会的倡议书) Dear Friends, Spring is in the air on campus. Everything has come back to life. What should we do to add color to the surroundings? What is in your mind to change our dull school life? We are waiting for your suggestions.                                            The Students’ Union 在△ABC所在的平面内有一点P，如果2＋＝－，那么△PBC和面积与△ABC的面积之比是 [　　] A． B． C． D．