A list of the fifteen operas most frequently performed in recent times includes no works by the nineteenth century German composer Richard Wagner. Although music producers tend to produce what audiences want, relative infrequency of performance probably does not indicate lack of popularity in Wagner’s case, since Wagner’s operas are notoriously expensive to perform on stage.
Which of the following, if true, most ply support the conclusion of the argument above
A．The list of most frequently performed operas does not include operas produced by small amateur groups.
B．Some opera companies are backed by patrons who are willing to commit large sums of money in order to enjoy lavish productions.
C．All of the fifteen most frequently performed operas of recent times are works that have been popular for at least 75 years.
D．More recordings have been produced recently of the works of Wagner than of the works of any other composer of opera.
E．(E) Operatic works of all kinds have been increasing in popularity in recent years.
参考答案：D
解析： 本题论述的结论是：造成查理·瓦格纳作品演出不频繁的原因不是因为他的作品不受欢迎而是因为他的作品的舞台演出费用极其昂贵。由此结论可知，瓦格纳的作品是本题论述的重点，因此要对本题的结论构成支持，就要以瓦格纳的作品为出发点来说明他的作品是受欢迎的。本题的5个选项中，只有(D)涉及了瓦格纳的作品，且间接说明了他的作品广受欢迎。因此(D)为正确答案。