胃癌的常用检查方法有
A．X线血管造影
B．胃细胞学
C．纤维胃镜
D．病理组织学
E．X线钡餐
参考答案：B,C,D,E
_________ is said that most teenagers have problems such as Li Ming’s.
A．That
B．This
C．It
D．She
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