The product of addition is not branched, cinnamic aldehyde structure is, cinnamic aldehyde ethyl silver ammonia solution oxidation reaction to generate X, X acidification to get Y, X, Y, Y and bromine addition reaction to generate Z is, A → B hydrolysis of halogenated hydrocarbons, B catalytic oxidation of alcohols to generate generation of cinnamic aldehyde, structure of cinnamic aldehyde, the structure of the structure of cinnamic aldehyde can be seen, A can be, B, according to

(1) From the above analysis, it can be seen that the structure of cinnamaldehyde short formula is, so the answer is:;

(2) reaction A → B chemical equation is:,

so the answer is:;

(3) Z is, containing carboxyl group, can be substitution reaction, contains bromine atoms, can be eliminated, substitution reaction, contains benzene ring, can be addition reaction, can not be a polymerization reaction, the reaction can not occur. Therefore, the answer is: b;

(4) Y () and ethanol under certain conditions in the reaction of the chemical equation is:,

The answer is:;

(5) meet the following conditions of the structural formula of one of the isomers of Y (): ① belongs to the ester class ② benzene ring only a substituent group ③ can be a silver mirror reaction, the isomer that meets the conditions is:,

The answer is:. p>The answer is: .