The head is 【11】 to be the most important part of the human body. So a 【12】 is o

The head is thought to be the most important part of the human body．So a leader is often compared to a head．Thus we have Head of State or the head of a delegation．
    The head is where the brain is located．It is naturally associated with ideas and intelligence．Very often，we need other people’s ideas and opinions when we want to do something well．This is because two heads are better than one．
    The eyes are also extremely precious to us．That is why we say“Mind your eyes”when we remind someone to be careful．
    Not only human beings but animals have eyes．many things also have“eyes”-the eyes of a skip，the eyes of a needle，the eyes of a typhoon，and so on．