患者，男性，42岁，因口腔腭部黏膜红色肿块二十多天就诊，初起时为小结节，后快速发展为肿块，无明显疼痛，近一个月来不明原因反复发热，体重减轻，有过冶游史。临床检查可见软腭左侧有一直径为1.5cm的粉红色肿块，质地中等，无压痛。右颈部及腹股沟触及肿大淋巴结。实验室检查：CD4+36个／mm3，胸部CT检查提示两肺多发小结节阴影。
下列哪项措施对确立诊断最为关键（）。
A.涂片检查
B.组织病理检查
C.血清学检验
D.免疫荧光检查
E.甲苯胺蓝染色
参考答案：B
When people think of tigers, they think they are strong and dangerous. But now, the big animal is calling for our help. There were once eight kinds of in the world, but three died out during the 20th century. In the last 70 years, the of Siberian tigers (东北虎)has gone from as many as 300 to 22 somewhere, The Siberian tiger has been dying out completely, If the government doesn’t make any efforts, it’s quite that there will be no more Siberian tigers in China in ten to twenty years. In order to double the number of wild tigers in the ten years, the World Wildlife Fund has started a program recently. It save wild tigers and put an end to tiger hunting and killing. China, together with twelve other ,has joined in. Wild animals, such as red deer and wild pigs, are the main of the tigers, The hunting of these animals is the greatest threat(危险)to tigers. So the most important thing is the animals that tigers eat. To protect the wild tigers, we need to call on more people to stop eating and hunting wild animals.
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