【单选题】

Questions 9 and 10 are based on the following news. Researchers say light exercise may help toA．reduce the risk of difficult labor.

B．improve the intelligence of the baby.
C．control weight in the womB、
D．have larger babies.

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根据网考网移动考试中心的统计，该试题：
1%的考友选择了A选项
9%的考友选择了B选项
69%的考友选择了C选项
21%的考友选择了D选项