回答问题。

1. Where does the snow come from?

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2. Where does the cloud come from?

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3. Where does the rain come from?

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患者，男，68岁。咳嗽，痰中带血丝2个月，发热10天，胸片显示右肺上叶片状阴影，呈肺炎样征象。

病人1个月后出现右面部无汗，瞳孔缩小，上睑下垂及眼球内陷。复查胸片显示右胸顶部致密块影，诊断最可能是

A．中央型肺癌

B．纵隔淋巴肉瘤

C．粟粒性肺结核

D．转移性肺痛

E．Pancoast肿瘤