某人对300例胃癌患者进行流行病学调查，包括人口学资料、饮酒、吸烟、劳动强度、吃变硬或发霉的馒头、膳食中蔬菜和蛋白质的量以及情绪变化等，同时将具有可比性的300名非胃癌患者（或健康人）进行同样项目的调查，以便进行结果比较。在该项科研工作中使用了哪种流行病学研究方法（）。
A.现况研究
B.筛检
C.病例对照研究
D.队列研究
E.流行病学实
参考答案：C
Korean culture is really popular right now. The Korean Wave(韩流) is sweeping Asian countries including(包括) 1 . Young people are 2 in Korean TV plays, Korean pop songs and the Korean language. The Korean Wave started 3 years ago with the TV series(电视系列剧) Winter Sonata(冬季恋歌). This love story is still popular now. People, especially girls, like the beautiful stories and handsome actors 4 Pei Yongjun ( 裴勇俊). In the music world, Korean stars are making 5 heard in China. You can often find big Korean names such as Baby Vox, SES and Finkle at the top of the Chinese 6 charts(排行榜). The Korean Wave 7 makes young people try the clothes and hairstyles of the Korean pop stars. Besides those, now some girls in China are having plastic surgery(整形手术) 8 their looks. It is said that many Korean stars look beautiful 9 plastic surgery. As you see, Korean culture has changed us a lot. Is it 10 for us to follow in every way? We each should think about it.
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