山西卷行天下月考卷 答案

山西卷行天下月考卷 答案，目前我们已经整理了山西卷行天下月考卷 答案的各科答案和试卷，更多试卷答案请关注本答案网。

6.D【解析】结果说明，生长素在低浓度时促进插条生根效果较强，高浓度时促进插条生根效果较弱，A错误；根据生长素浓度对根的影响曲线可知，在最适浓度的两侧，会有两个不同浓度的生长素产生相同的生根效果，B错误；低浓度的生长素和乙烯具有抗衡作用，高浓度的生长素和乙烯具有协同作用，C错误；在做预实验时应该要设置不含生长素的空白对照，在做正式实验时可不设置不含生长素的空白对照，D正确

EOne possible version:This evening,my parents and I had dinner in a restau-rant.At first we were happy.But while we were enjoyingour food,several young people next to us were talking loud-ly and using some bad words.That made us very angry.Then,I stood up,walked over to them and said,"Excuseme,could you please not talk loudly?"They listened to meand said sorry to us.I think what they did was wrong.It's not polite tospeak loudly in public.We should behave well and thinkabout others in public.Only in this way can we live in abetter place.