They asked Katherine Johnson for the moon，and she gave it to them.With little more than a pencil，a slide rule （計算尺） and one of the finest mathematical minds in the country，Mrs.Johnson，who died at 101 on Monday，calculated the precise track that would let Apollo 11 land on the moon in 1969 and，after Neil Armstrong's history- making moonwalk，let it return to Earth.
    Mrs.Johnson was one of several hundred strictly educated，supremely capable yet largely unrecognized women who，well before the modern feminist （男女平等主義者） movement，worked as NASA mathematicians.But it was not only her sex that kept her long unsung.For some years at midcentury，the black women were subjected to a double separation （隔離）：They were kept separate from the much larger group of white women who in turn were separated from the agency's male mathematicians and engineers.
    Mrs.Johnson broke barriers at NASA.In old age，Mrs.Johnson became the most celebrated of the black women who served as mathematicians for the space agency.Their story was told in the 2016 Hollywood film Hidden Figures，which was nominated for three Oscars，including best picture.
    In 2017，NASA dedicated a building in her honor.That year，The Washington Post described her as "the most high-profile of the computers"- "computers" being the term originally used to describe Mrs.Johnson and her colleagues，much as "typewriters" were used in the 19th century to represent professional typists.
    She "helped our nation enlarge the frontiers of space，" NASA's administrator，Jim Bridenstine，said in a statement on Monday， "even as she made huge steps that also opened doors for women and people of color in the universal human quest to explore space."
As Mrs.Johnson herself was fond of saying，her term at Langley- from 1953 until her retirement in 1986- was "a time when computers wore skirts."
（1）What did Mrs.Johnson do as a NASA mathematicians，according to Paragraph 1？ （nomore than 15 words）

She calculated precise tracks for spaceships/astronauts to land on the moon and return to Earth.

She calculated precise tracks for spaceships/astronauts to land on the moon and return to Earth.

（2）What barrier（s） did Mrs.Johnson have to break at NASA？ （no more than 10 words）

Her sex and being a black woman.或 Being a black woman.或That she was a black woman.

Her sex and being a black woman.或 Being a black woman.或That she was a black woman.

（3）How did NASA recognize Mr.Johnson's contribution？ （no more than 10 words）

NASA dedicated a building in her honor.

NASA dedicated a building in her honor.

（4）What does the underlined phrases mean in the last paragraph？ （no more than 10 words）

A time when women did all calculation.A time when calculation was done by women.

A time when women did all calculation.A time when calculation was done by women.

（5）What do you learn from Mrs.Johnson's experience？ （no more than 20 words）

I'm convinced that knowledge is powerful enough to wipe out ignorance.
或I think we should never be limited by the labels attached by others.

I'm convinced that knowledge is powerful enough to wipe out ignorance.
或I think we should never be limited by the labels attached by others.