下载chromedriver，链接：http://chromedriver.storage.googleapis.com/index.html
----------ChromeDriver v2.42 ---------------------
Supports Chrome v70
（我试了一下午。。。。。。。。）
----------ChromeDriver v2.41 (2018-07-27)----------
Supports Chrome v67-69
----------ChromeDriver v2.40 (2018-06-07)----------
Supports Chrome v66-68
----------ChromeDriver v2.39 (2018-05-30)----------
Supports Chrome v66-68
----------ChromeDriver v2.38 (2018-04-17)----------
Supports Chrome v65-67
----------ChromeDriver v2.37 (2018-03-16)----------
Supports Chrome v64-66
----------ChromeDriver v2.36 (2018-03-02)----------
Supports Chrome v63-65
----------ChromeDriver v2.35 (2018-01-10)----------
Supports Chrome v62-64
----------ChromeDriver v2.34 (2017-12-10)----------
Supports Chrome v61-63
----------ChromeDriver v2.33 (2017-10-03)----------
Supports Chrome v60-62
----------ChromeDriver v2.32 (2017-08-30)----------
Supports Chrome v59-61
----------ChromeDriver v2.31 (2017-07-21)----------
Supports Chrome v58-60
----------ChromeDriver v2.30 (2017-06-07)----------
Supports Chrome v58-60
----------ChromeDriver v2.29 (2017-04-04)----------
Supports Chrome v56-58
----------ChromeDriver v2.28 (2017-03-09)----------
Supports Chrome v55-57
----------ChromeDriver v2.27 (2016-12-23)----------
Supports Chrome v54-56
----------ChromeDriver v2.26 (2016-12-09)----------
Supports Chrome v53-55
----------ChromeDriver v2.25 (2016-10-25)----------
Supports Chrome v53-55
----------ChromeDriver v2.24 (2016-09-09)----------
Supports Chrome v52-54
----------ChromeDriver v2.23 (2016-08-04)----------
Supports Chrome v51-53
----------ChromeDriver v2.22 (2016-06-06)----------
Supports Chrome v49-52
----------ChromeDriver v2.21 (2016-01-28)----------
Supports Chrome v46-50
----------ChromeDriver v2.20 (2015-10-08)----------
Supports Chrome v43-48
----------ChromeDriver v2.19 (2015-08-28)----------
Supports Chrome v43-47
----------ChromeDriver v2.18 (2015-08-19)----------
Supports Chrome v43-46