阅读理解。

根据短文内容在空格中填入适当的单词使文章意思完整。

     What do young people think about places in town? We   1   a survey of our readers and this is what we learned. All the movie theaters are good, but the Screen City is the best in our town. It has the   2   screens and the most comfortable seats. However, Town Cinema is the cheapest, and it has the   3   service. The most popular clothing store is Jason’s. It has the best quality clothing. It’s also the   4   . Funky Fashions is the worst. It has really bad service. As   5   radio stations, most people think that Jazz 107.9 FM is really great. It plays the most interesting music.

活塞行程长度恰等于（）。

A.活塞长度

B.曲柄回转直径

C.连杆长度

D.曲柄回转半径