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  3. Hair loss is one of those things we still do not understand. Science has, of course, shown that men are more likely than women t

Hair loss is one of those things we still do not understand. Science has, of course, shown that men are more likely than women t

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问题     Hair loss is one of those things we still do not understand. Science has, of course, shown that men are more likely than women to suffer major hair loss. Some kinds of hair loss are temporary, an effect of illness. In those cases we can expect the hair to grow back.
It all depends on whether the hair root is alive. If it is not, hair loss is permanent and nothing will help. Some daily loss of hair is a normal, healthy sign. Most people lose between 40 to 50 scalp hairs each day.
    Each of these scalp hairs grows for from two to six years and then rests. About three months later it is pushed out by a new hair growing from the same root. This is not something that should cause great concern.
    Something else we know is that normal hair loss is seasonal, with the most hair loss occurring in the fall. Everyone experiences a normal cycle of loss and growth. The problem of hair loss results when loss is greater than growth.
    The main cause of hair loss in men seems to be accumulation of a hormone in the body. When that hormone reaches a certain level, the hair growing period is shortened and hair loss is the result. There is no cure for most cases of hair loss. This, however, is not the end of the world.
The best title for the passage may be ________.
选项 A、Loss or Growth
B、Hair Loss
C、Healthy Sign
D、Change with Seasons
答案B
解析 主旨大意题。通读全文，整篇都是在讲脱发的事情，B项最适合当标题。
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