下列实验式中,无需知道相对分子质量即可确定分子式的是 ( )
A.CH3O
B.CH
C.CH2O
D.C2H3
答案:A
某女,37岁。上腹痛近半年,吐酸水,常腹泻,制酸药效果不佳。X线钡餐造影发现食管、胃及十二指肠球部均有溃疡,血清检查示:血清胃泌素530μg/ml,最有可能的诊断
A.恶性淋巴瘤
B.多发性溃疡
C.胃癌
D.复合性溃疡
E.胃泌素瘤
My daughter will _____ you one day only if you keep ______ like this.
A.receive; performing
B.accept; performing
C.receive; to perform
D.accept; performed