单项选择题

According to researchers, Richard Nixon’s death was ______.

A．caused by his heart problems.
B．indirectly linked to his wife’s death.
C．the inevitable result of old age.
D．an unexplainable accident.
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单项选择题
The research reviewed in the passage suggest that ______.
A．remarried men live healthier lives.
B．unmarried men have the longest life spans.
C．widowers have the shortest life spans.
D．widows are unaffected by their mates’deat
单项选择题
Which title is more appropriate to express the primary idea
A．A Generous Writer.
B．A Joyful Philanthropist.
C．A imaginative Philanthropist.
D．An Unforgetable Benefactor.
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