转移性淋巴结肿大（）
A.扁平长梭形，直径<1.0cm，长／宽>2，内部结构正常
B.多发，不易融合，各自回声差异较大，可有液化坏死、钙化
C.较大，相互融合的淋巴结之间界限清晰，内部呈均匀低弱回声
D.单发至多发，由近及远，易融合而失去淋巴结形态特点，内部易液化坏死
E.直径>1.0cm，长／宽>2，皮质增厚，回声减低，但内部结构正常，不易融合
参考答案：D
解析：转移性淋巴结肿大的最主要特点是根据原发肿瘤的部位不同，转移的途径也有一定差别，极易融合而失去淋巴结形态特点；结核性淋巴结肿大的特点是回声复杂多变，可有液化坏死、钙化等表现；炎性淋巴结肿大的特点是保持淋巴结形态，但长／宽>2，皮质增厚，回声减低，不易融合。
Madison Stump is a 13-year-old entrepreneur (企业家) in the USA. To save our planet, she has 1 a green business, PaperAgain. Madison lives in a “green” family. She is 2 trying to be 100% earth friendly. One day, Mandison was thinking over what else she could do to help the environment. 3 , she thought, “Why not 4 those used boxes and paper to create beautiful notebooks? And I can sell them to help people in need.” That night, Mandison made her first notebook with scrap paper (废纸), and she used an empty gum box for a 5 . It was the 6 of her green business. Mandison’s first customer was her sister. She, of course, never 7 it! However, Mandison didn’t mind because she got to see her use it. Before you know it, all Mandison’s school friends were asking to buy the amazing notebooks. Then, Mandison’s dad came up with the 8 idea of starting a website, PaperAgain.com, so that these notebooks could be bought online. Now Mandison is the 9 of a real business! Her notebooks are selling at the store in her hometown. And she is often 10 on the local television news!
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