中国药典(2000年版)鉴别某药物的方法为:取药物约0.1g,加水5ml使溶解,加10%香草醛溶液lml微热,冷后即析出黄色结晶,滤出,用乙醇重结晶,于105℃干燥后,测其熔点为228~231℃。该药物应为
A. 异烟肼
B. 尼可刹米
C. 对乙酰氨基酚
D. 阿司匹林
E. 甘油
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What() doing when you()
A. were they; got there
B. they were; arrived there
C. were they; came there
D. they were; reached there
戊烯二醛反应的产物是
A. 紫色配位物
B. 绿色配位物
C. 黄色希夫碱
D. 赭色沉淀
E. 猩红色偶合物
A1型题 阿昔洛韦临床上主要用于()。
A. 抗真菌感染
B. 抗革兰阴性菌感染
C. 免疫调节
D. 抗病毒感染
E. 抗幽门螺旋杆菌感染
They have not decided ()for their holiday.
A. where to go
B. where they to go
C. where will they go
D. they will go where