未知题型 Why does Michelle Obama hold a strong fascination for the author?A．She will pay closer attention to the interests of African-American women.B．She will present to the world a new image of African-American women.C．She possesses many admirable qualities becoming a First Lady.D．She serves as a role model for African women.

未知题型 What is the current trend in higher education discussed in the passage?A．Institutions worldwide are hiring administrators from the U. S.B．A lot of political activists are being recruited as administrators.C．American universities are enrolling more international students.D．University presidents are paying more attention to funding-raising.

判断题 为了确定直线和真实数据的总误差，需要把所有误差的平方求和。()