幽门螺杆菌感染与下列何种癌症有关()
A.肝癌
B.胃癌
C.胶质细胞瘤
D.结肠癌
E.子宫颈癌
参考答案:B
解析:流行病学调查揭示,幽门螺杆菌感染与胃癌发生有关。
The book A Short Guide to Great Britain , which you sent me before I went abroad , offered me ______ guide.I am really thankful.
A.careful
B.practical
C.humorous
D.acceptable
气候变化问题是科学问题而非政治问题