癌症和年龄有关，30岁及以下的人群无需做任何筛查。()
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What great achievements have been made since mid 1970s？
A. Many activists have established lots of local groups to help the beaten women.
B. Plenty of temporary homes for the victims and their children have been set up.
C. The police and the courts now treat this problem with more serious attitude.
D. All of the above.
鼠类在黑暗环境中活动、奔跑，而不碰撞跌倒主要靠：()
A. 听觉
B. 触觉
C. 嗅觉
D. 视觉
根据2015年陈万青教授等发布的研究数据表明，中国女性癌症患病率排名第一位的是()。
A 乳腺癌
B 肺癌
C 卵巢癌
D 皮肤癌
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