四 篇章結構        To many people, the point of learning a second language may not be very obvious.   51      Well, scientists might just have an answer for you.   52     Those who speak two languages have also been proven to excel at focusing on useful information while ignoring distracting information.        Surprisingly, the ability to speak a second language may even aid in the prevention of mental disorders.    53             54      It was once believed that bilingual children could suffer major disadvantages, such as developing learning difficulties even split personalities.   55    However, it’s true that bilingual people are more likely to have weaker verbal skills in both of the languages they speak since the knowledge of one language can interfere with that of the other.
【題組】51.
(A) It has been demonstrated that when a person ages, bilingualism delays the effects of dementia and can even increase the likelihood of recovering from a stroke.
(B) Studies have indicated that compared with those who speak only one language, bilingual people perform better on mental tasks such as problem-solving, planning, and memory recall.
(C) Thankfully, these beliefs have been proven false.
(D) Despite all the benefits of learning a second language, a few small disadvantages have been found.
(E) You may wonder: If all your friends and family speak the same language, what is the advantage of learning a second one?