[单项选择] Whatever their chosen method, Americans bathe zealously. A study conducted found that we take an average of 4.5 baths and 7.5 showers each week and in the ranks of non edible items purchased by store customers, bar soap ranks second, right after toilet paper. We spend more than $ 700 million annually on soaps, but all work the same way. Soap is composed of molecules that at one end attract water and at the other end attract oil and dirt, while repelling water. With a kind of pushing and pulling action, the soap loosens the bonds holding dirt to the skin. Unless you’’re using a germicidal soap, it usually doesn’’t kill the bacteria soap simply removes bacteria along with dirt and oil. Neither baths nor showers are all that necessary and unless you’’re in a Third World country where infectious diseases are common, or you have open sores on your skin, the dirt and bacteria aren’’t going to hurt. The only reason for showering or bathing is to feel clean and refreshed. There is a phy
A. Dry skins flakes will disappear from the body once you get out of the bathtub.
B. It kills bacteria better than showering.
C. It reduces your blood circulation if it is nice and warm.
D. The floating action can reduce the stress on your muscles.