摘要： Modern farming methods can have unpleasant effect on environment. A. an; 不填 B. an; the C. 不填; an D. an; an

网址：http://m.1010jiajiao.com/timu3_id_2978286[举报]

Modern farming methods can have unpleasant effect on environment．

Modern farming methods can have ________ unpleasant effect on ________ environment．

an；不填

an; the

不填；an

an; an

Modern farming methods can have ________ unpleasant effect on ________ environment．