Hormone therapy may shrink or slow the growth of cancer, and thus it will eliminate the cancer if properly used.
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Mammograms, an X-ray of the breast, can show tumors before they get large enough to feel.
A. 对
B. 错
A breast ultrasound can help find cysts, fluid-filled sacs that most often aren’t cancer.
A. 对
B. 错
HTML5中的( )元素可以包含所有通常放在页面头部的内容。
A. header
B. nav
C. aritcle
D. section
HTML5中（ ）元素经常被用于定义一篇日志、一条新闻或用户评论等。
A. header
B. nav
C. aritcle
D. section
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