问题
单项选择题
老年人胃腺体萎缩，胃酸分泌减少，60岁下降到正常水平的（）
A.10%～20%
B.20%～30%
C.30%～40%
D.40%～50%
E.50%～60%
答案
参考答案：D
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老年人胃腺体萎缩，胃酸分泌减少，60岁下降到正常水平的（）
A.10%～20%
B.20%～30%
C.30%～40%
D.40%～50%
E.50%～60%
参考答案：D
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