阅读理解（五）阅读理解（共20小题；每小题2分，满分40分）阅读下列短文，从每篇短文后所给各题的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。AMargaret, married with two small children, has been working for the last seven years as a night cleaner, cleaning offices in a big building.She trained as a nurse, but had to give it up when her elder child became seriously ill. “I would have liked to go back to it, but the shifts are all wrong for me, as I have to be home to get the children up and off to school.”So she works as
