下列化合物发生亲电取代反应活性最高的是
A. 甲苯
B. 苯酚
C. 硝基苯
D. 苯甲酸
n. a lamp in a transparent case, often a metal case with glass sides, that has a handle, so that you can carry it outside
A. liver
B. lantern
C. magnet
D. label
n. A vessel belonging to a steamship-line.
A. liner
B. label
C. liquid
D. layer
v. to bend or move from a vertical position; adj. without much flesh; thin and fit
A. lean
B. magnificent
C. loan
D. lag