WHAT KINDS OF SUBSTANCES ARE ADRENALINE AND NOR ADRENALINE

71. - DE THI THU DAI HOC MON ANH VA DAP AN
Tiếng Anh DE THI THU DAI HOC MON ANH VA DAP AN

71. What kinds of substances are adrenaline and nor adrenaline?

A. Subatomic particles.

B. Minerals.

C. Vitamins.

D. Hormones.