下列哪一项常可提示早期乳癌
A.月经周期紊乱
B. * * 周期性胀痛
C. * * 局限性肿痛
D. * * 内多个小肿块
E. * * 内单个无痛性肿块
参考答案:E
A doctor can help people _______ good health and live a better life. [ ]
A. enjoys
B. enjoying
C. enjoyings
D. enjoy
某网页不允许搜索引擎抓取,以下代码正确的是:()
A. <meta name="robots" content="nosnippet"/>
B. <meta name="robots" content="noarchive"/>
C. <meta name="robots" content="nofollow"/>
D. <meta name="robots" content="noindex"/>