______ a person looks like is not as important as ______ he or she grows up to be.

A．How; how

B．What; that

C．What; what

D．How; what

在职业性中毒中，生产性毒物主要通过下述哪种途径进入体内

A．消化道

B．皮肤

C．呼吸道

D．毛囊

E．汗腺