题目内容：
Most American women know too little about how to lower their cancer risk.
参考答案：
答案解析：
单选题：Most American women know too little about how to lower their
- 题目分类：卫生类
- 题目类型：单选题
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请在（49）处填上最佳答案。
请在（49）处填上最佳答案。
图示结构在水平荷载作用下，试问下列哪一组内力正确（提示：结构自重不计）？
图示结构在水平荷载作用下，试问下列哪一组内力正确（提示：结构自重不计）？
根据材料请回答题:Many American women have a poor knowledge of cancer
根据材料请回答题:Many American women have a poor knowledge of cancer.
图示结构中，当A点作用外力P时，下述对D点变形特征的描述何者正确？ （ ）
图示结构中，当A点作用外力P时，下述对D点变形特征的描述何者正确？ （ ）
We all think that Mary’s husband is a very boring person.
We all think that Mary’s husband is a very boring person.