问题
单项选择题
The nurse is interviewing a client about his medical history. Which preexisting condition may lead the nurse to suspect that a client has colorectal cancer（）
A. Duodenal ulcers.
B. Hemorrhoids.
C. Weight gain.
D. Polyps.
答案
参考答案：D
解析：
Colorectal polyps are common with colon cancer. Duodenal ulcers and hemorrhoids aren’t a preexisting condition of colorectal cancer. Weight loss--not gain--is an indication of colorectal cancer.
缺失，余留牙正常，义齿覆盖粘膜红肿、压痕，局部义齿
基牙上弯制
支托变形或折断。