胃内充盈缺损不代表哪一种疾病?()
A.良性肿瘤
B.胃溃疡
C.恶性肿瘤
D.胃内异物
E.胃石(如胃柿石)
参考答案:B
We watch every basketball game on _____ TV. [ ]
A. a
B. an
C. the
D. /