下载chromedriver，链接：
| chromedirver版本 | 支持的Chrome版本 |
v2.41 (2018-07-27) | v67-69 |
v2.40 (2018-06-07) | v66-68 |
v2.39 (2018-05-30) | v66-68 |
v2.38 (2018-04-17) | v65-67 |
v2.37 (2018-03-16) | v64-66 |
v2.36 (2018-03-02) | v63-65 |
v2.35 (2018-01-10) | v62-64 |
v2.34 (2017-12-10) | v61-63 |
v2.33 (2017-10-03) | v60-62 |
v2.32 (2017-08-30) | v59-61 |
v2.31 (2017-07-21) | v58-60 |
v2.30 (2017-06-07) | v58-60 |
v2.29 (2017-04-04) | v56-58 |
v2.28 (2017-03-09) | v55-57 |
v2.27 (2016-12-23) | v54-56 |
v2.26 (2016-12-09) | v53-55 |
v2.25 (2016-10-25) | v53-55 |
v2.24 (2016-09-09) | v52-54 |
v2.23 (2016-08-04) | v51-53 |
v2.22 (2016-06-06) | v49-52 |
v2.21 (2016-01-28) | v46-50 |
v2.20 (2015-10-08) | v43-48 |
v2.19 (2015-08-28) | v43-47 |
v2.18 (2015-08-19) | v43-46 |