【正确答案】
A
【答案解析】[解析] 29-31
Amnesia is a condition in which memory is disturbed. (29)
In simple terms it is the loss of memory.
The causes of amnesia are organic or functional. Organic causes include damage to the brain, through external injuries or disease, or use of certain drugs. Functional causes are psychological factors, such as defense mechanisms. amnesia may also be spontaneous, in the case of transient global amnesia. This global type of amnesia is more common in middle-aged to elderly people, particularly males, and usually lasts less than 24 hours.
Another effect of amnesia is the inability to imagine the future. A recent study published online in the Proceedings of the National Academy of Sciences shows that amnesiacs with damaged hippocampus cannot imagine the future. (30)
This is because a normal human being, imagining the future, uses past experiences to construct a possible scene
. For example, a person trying to imagine what would happen at a party set to occur in the near future would use past experience at parties to help construct the event.
In movies and television, particularly sitcoms and soap operas, it is often depicted that a second blow to the head, similar to the first one which caused the amnesia, will cure it. (31)
In reality, however, repeat this may cause more deficits including cognitive problems
, and in extremely rare cases may even be fatal.
Q: What does the speaker tell us about amnesia?
[一点即通] 细节明示。短文一开始就明确解释了amnesia“失忆症”简单地说就是记忆丧失，因此选项A)正确。