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问题 选择题

圆x2+y2=1上的动点P到直线3x-4y-10=0的距离的最小值为（　　）

A．2

B．1

C．3

D．4

答案

圆x2+y2=1的圆心（0，0）到直线3x-4y-10=0的距离等于

|0-0-10|
9+16
=2，

故圆x2+y2=1上的动点P到直线3x-4y-10=0的距离的最小值为 2-1=1，

故选 B．

单项选择题 共用题干题

患者女，48岁，因“左乳内上象限肿物1周”来诊。查体：肿物活动度差，触诊及B型超声均未发现同侧腋下淋巴结肿大。其姐患乳腺癌，母亲患卵巢癌。术前乳腺内肿物粗针穿刺组织病理诊断浸润性癌，行 * * 切除手术。大体检查：乳腺肿瘤呈圆形，2.9 cm×1.9 cm×1.8 cm，边界清楚，质软，切面灰白色。

光镜下病理组织学形态及细胞角蛋白免疫组织化学染色结果如下图所示。最有可能的病理诊断是（）。

A.浸润性导管癌非特殊型

B.浸润性导管癌特殊型

C.髓样癌

D.浸润性小叶癌变异型

E.黏液癌
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填空题

How many of us would temp for three years while we waited for the perfect job Not many of us, perhaps. But Wentworth Miller, the "Prison Break" star, said he chose to wait even longer time (1) he found the right job.
"Actually I think it might have been three or four years until I was lucky enough to get guest (2) on TV shows," said Miller, 34, who rose to international stardom (3) to "Prison Break" in 2006. That kind of patience and p will was portrayed in "Prison Break". Miller (4) engineering wizard Michael Scofield, who tries everything to break out of a Chicago (5) with his brother. Miller said he was fond of his character, (6) he said "exists in shades of grey".
Miller comes from a (7) of teachers. He said he didn’t seem fated for a career in the arts, (8) his passion for acting. After (9) from Princeton with an English degree, he moved (10) his parents’ request to Los Angeles to look for a stable life. He started (11) in a little company that made television movies. This (12) simply faxing, filing, walking the boss’ dog and going to the store for the boss’ lunch. Every weekend during the summer, Miller (13) go to the office (14) he didn’t have air-conditioning. "I would hang (15) in the conference room and set up camp and rob the company kitchen," recalled Miller.
(16) , Miller realized he still had questions about his choice. He decided to quit. But the boss said he was making a mistake and offered him a well-paid assistant position. "I eventually (17) that if I did the corporate job, it would be great if I was successful, but I would always wonder about the (18) . If I did the acting and was successful, I would never wonder (19) that job," he explained. He quit and temped (20) many people in the entertainment industry.
Now, he’s a hot star and has people coming up to him at film festivals saying, "Weren’t you the one who (21) to stand by the copy machine "
"That was tough, but I’m glad I have that perspective. Because now I’m at a point (22) big shots laugh at all my jokes and I think, You know, I got coffee for people like you for six years’. So I know what’s (23) , because I’ve seen the other side." But what if, when he was offered the corporate job, there had been more money "It was never about the (24) There’s a kind of excitement that comes along with acting. I can’t find it anywhere else. Even if I had to go back to temping, even if this is not the beginning of an amazing career, I would not (25) making that jum
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