Music produces profound and lasting changes in the brain. Schools should add music classes, not cut them. Nearly 20 years ago, a

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问题     Music produces profound and lasting changes in the brain. Schools should add music classes, not cut them. Nearly 20 years ago, a small study advanced the【C1】________that listening to Mozart’s Sonata for Two Pianos in D Major could boost mental functioning. It was not long【C2】________trademarked "Mozart effect’ products began to appeal to anxious parents aiming to put little kids【C3】________the fast track to prestigious universities like Harvard and Yale. Georgia’s governor even【C4】________giving every newborn there a classical CD or cassette.
    The evidence for Mozart therapy【C5】________to be weak, perhaps nonexistent, although the【C6】________study-never claimed anything more than a temporary and limited effect. In recent years,【C7】________, scientists have examined the benefits of a concerted【C8】________to study and practice music, as【C9】________to playing a Mozart CD or a computer-based "brain fitness" game【C10】________in a while.
    Advanced monitoring【C11】________have enabled scientists to see what happens【C12】________ your head when you listen to your mother and actually practice the violin for an hour every afternoon. And they have found that music【C13】________can produce profound and lasting changes that【C14】________the general ability to learn. These results should【C15】________public officials that music classes are not a mere decoration, ripe for discarding in the budget crises that constantly【C16】________public schools.
    Studies have shown that【C17】________instrument training from an early age can help the brain to【C18】________ sounds better, making it easier to stay focused when absorbing other subjects, from literature to mathematics. Those who are good at music are better able to【C19】________a biology lesson despite the noise in the classroom【C20】________, a few years later, to finish a call with a client when a colleague in the next office starts screaming at a subordinate. They can attend to several things at once in the mental scratch pad called working memory, an essential skill in this era of multitasking.
【C2】

选项 A、unless
B、before
C、until
D、since

答案B

解析 语义逻辑题兼考查固定搭配。上一句提到一项小型研究提出“听莫扎特的《D大调双钢琴奏鸣曲》可以促进大脑机能”,此处空格后又提及“印有‘莫扎特效应’商标的产品开始吸引那些焦急的父母”。从语义上讲。前者应该发生在前,才有后者的产生。英语中有一个常用表达:It was not long before sth. happened,表示“不久后就发生了某事”,B项符合文中语义。A项unless意为“除非”,表条件,引导条件状语从句。C项until“直到……才”和D项since“自从”虽也可表时间,但二者引导时间状语从句侧重指一个时间段,无法体现文中前后句子动作发生的先后顺序。
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