Beauty is a curious phenomenon, one of permeable, shifting boundaries. We may think we understand it,【C1】______we sense it effortlessly.【C2】______, it is a bundle of mysteries researchers are still【C3】______ Consider the ancient proverb:【C4】______is in the eye of the beholder. Until about 30 years ago it seemed too【C5】______for scientists to bother【C6】______. When they finally【C7】______it, their results【C8】______them. 【C9】______, the maxim is false. Facial beauty is the same【C10】______the world. In every tribe and culture, individuals will consider Sharon Stone, say, an attractive woman. It goes【C11】______Males can identify good-looking men, and females alluring women. Old and young, rich and poor, learned and【C12】______, all agree【C13】______who is beautiful.【C14】______people of every class and personality type. We don’t learn this response. We’ re born【C15】______it. In one recent study, babies just 20 hours old recognized attractive faces and【C16】______them. So beauty is in our DNA. The eye of the beholder doesn’t matter. On the other hand, and this is【C17】______it gets【C18】______, the facial shell is just the foundation of beauty. We see the self in the face, every day,【C19】______and we can’t【C20】______the two.

【C19】

A．all the day
B．all the time
C．every time
D．anytime