阅读理解

                                                                                                      山居秋暝

                                                                                                         王维

                                                                                          空山新雨后，天气晚来秋。

                                                                                          明月松间照，清泉石上流。

                                                                                          竹喧归浣女，莲动下渔舟。

                                                                                          随意春芳歇，王孙自可留。

    My name is Dennis. I'm a worker(工人) of a big store. I don't work in the morning. I work at night. Every morning I come home at about 6:30. I have breakfast at 7:00. After breakfast I go to bed. I get up at around 2:30. I have lunch at 2:45 and dinner at 7:40. Then I go to work at 8:30. My work starts at 9:00. I look after(照看) the store every night. I like my work very much.

如果（x+q）与（x+$\frac{1}{5}$）的积中不含x项，则q是（　　）