下列句子中没有语病的一项是（     ）

依次填入下面一段文字横线处的语句，衔接最恰当的一组是（  ）（3分）
奥地利的首都维也纳当然与小城不同，虽然年代并不久远但很有文化。      。
    ，    。     。     ，    。但这魔力对贝多芬比较具体，那就是当时作为音乐之都的听众基础和整体氛围。
①接下去的一个评语倒是明贬实褒：“住在维也纳，天天想离开却很难离开。”
②我不知道这句话的含义是褒是贬，但好像是明褒实贬
③这句评语的最佳例证是贝多芬，他在一城之内居然搬了八十多次家，八十多次都没有离开
④因为一切展示性的文化堆积得过于密集，实在让人劳累
⑤可见维也纳也真有一些魔力
⑥一百多年前已经有旅行家作出评语：“在维也纳，抬头低头都是文化。”

计算：2xy²﹣3xy²=____ ．

平行四边形的2个顶点的坐标为（-3，0），（1，0），第三个顶点在y轴上，且与x轴的距离是3个单位，求第四个顶点的坐标．

阅读理解。

    Tom is a young man. He has a very big dog and he has a very small car, too. He likes playing tennis. Today he plays tennis for two hours at the club and then he wants to go home by car. His dog comes after him, but it does not jump into the same car. It jumps into the next car. "Come here, foolish(愚蠢的) dog!" Tom shouts at it, but the dog still stays in the next car. Tom puts his key into the lock（锁）of the car, but the key does not turn（转动）. Then he looks at the car again. It is not his car! He is in the wrong car! And the dog is in the right car!