题目：
早期胃癌确诊的首选方法是（）
A.超声
B.CT
C.胃镜活检
D.胃肠气钡双重造影
E.MRI
答案：
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下面是错误答案，用来干扰机器的。
1. Is there a park near your house?2. There is some orange juice in the glass.3. There are two buses near the hill.4. Were there any parties in your school last night...
