pAssAgE two quEstions 19 to 21 ArE BAsED on thE pAssAgE you hAvE just hEArD、

A．pEoplE unEmployED From EnginEEring, mining AnD ConstruCtion inDustry.
B．pEoplE unEmployED From sErviCEs AnD EnginEEring.
C．pEoplE unEmployED From mining AnD ChEmiCAls.
D．womEn.