【单选题】

Passage Two

Questions 29 to 31 are based on the passage you have just hearD、A．Many people who are in need work in it.
B．The hospital blood is mainly provided by it.
C．Anyone can get help from it.
D．It covers nearly the whole worlD、

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根据网考网移动考试中心的统计，该试题：
2%的考友选择了A选项
10%的考友选择了B选项
14%的考友选择了C选项
74%的考友选择了D选项