有机化学合成题HC≡CH →CH3CH2CH2CH2OH应该怎样完整的回答啊！

HC≡CH +H2O -> CH3CHO
2CH3CHO -> CH3CHOHCH2CHO
CH3CHOHCH2CHO ->CH3CH=CHCHO + H2O
CH3CH=CHCHO + 2H2 ->CH3CH2CH2CH2OH
过程不需其他有机物.