20．A.shops

　　B．experiments

　　C．businesses

　　D．restaurants

　　解析：选B　根据最后一句中“may hopefully result in many more”可知，作者希望这样的做法会越来越多。由此可知，此处应指服务员询问作者微笑卡的相关信息，他们也想模仿作者的这种做法。故选B项。

　　Ⅱ.语法填空

　　(2016·太原二模)What should you do if you are not able to sleep? The best thing is to try to avoid bad habits. __1__ you always go to bed and get up at about the same time, this sets a __2__ (health) rhythm in your life. Don?t drink caffeine drinks in the evening. Smoking and alcohol can also keep you awake. You may have trouble __3__ (sleep) if you have a heavy meal just before you go to bed.

　　You may also find it difficult __4__ (get) to sleep if you have a problem or something else on your mind. This is __5__ you need to relax. As you lie in bed, tense the muscles in your feet and then relax __6__. Continue up the body, tensing and relaxing the muscles until you reach the head. Start with the feet again if you are still tense. If you __7__ (think) about a problem or about something exciting that is going to happen the next day, get up and write about it. That will help to take it off your mind. You can also get up and read, but be sure to choose __8__ book that is not too difficult. __9__， you may get so interested that you won’t want to go to sleep even when you feel sleepy.

【2017届高考英语一轮复习技能提升练：必修3 Unit 4《Astronomythe science of the stars》（新人教版含解析）】相关文章：

★ 北京市2014高考英语一轮复习 练习手册（16）必修4 Unit 1 Women of achievement（含解析）新人教版

★ 【浙江专用】2014届高考英语一轮复习课时作业(二十八)选修6Unit 3《A healthy life》

★ 【三维设计】2017版（江苏专用）二轮复习练习：必修1 Unit 3《Looking good feeling good》课时跟踪检测B卷（含解析）

★ 2014届高考英语一轮复习课时作业(四十四)选修8Module 2《The Renaissance》（外研版）

★ 【课堂新坐标】2017届高考英语（通用版）二轮复习短文改错专题训练：训练1 短文改错（Ⅰ）（含解析）

★ 2014届高考英语一轮复习课时作业(三十)必修5Module 6《Animals in Danger》（外研版）

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 6 A卷 Word版含解析

★ 【优化方案】2017届高考英语二轮复习全国卷Ⅱ规范练：6（含解析）

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 6 B卷 Word版含解析

★ （安徽专用）2014届高考英语一轮复习方案 作业手册（10）模块4 《Unit 10 Money》（含解析） 北师大版必修1