托烷类生物碱的特征反应
A. Keller-Kiliani反应
B. Kedde反应
C. 与碱性酒石酸铜试液的反应
D. Vitali反应
E. Thalleioquin反应
Although the work needs to be done more exhaustively, efforts have been made to collect the songs and ballads of the American Revolution.
A. precisely
B. selectively
C. frantically
D. thoroughly
在int b[][3]=1，3,2；4，5，6，0；中b[2][2]的值是( )。
A. 0
B. 5
C. 6
D. 2
What was the first thing which was done by Henry before he went to work
A. Cut grass in the backyard.
B. Leave a note for the milkman asking for just one quart of milk.
C. Put the garbage in the backyard.
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