20．A.anything

　　B．nothing

　　C．everything

　　D．something

　　解析：选B。句意：一旦你把自己当成有担当的大孩子，就没有什么能够阻挡你成功。nothing意为“没有什么东西”，符合语境。故B项正确。anything意为“任何东西”；everything意为“一切”；something意为“某样东西”，均与语境不符。

　　Ⅳ.语法填空

　　(2016·太原市高三年级模拟考试)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 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

【2017版高考英语一轮复习知能演练轻松闯关：必修3 Unit 5《Canada】相关文章：

★ 【北师大版】2014届高考英语一轮复习指导课时作业：Unit 2 B卷 Word版含解析

★ 2017届高考英语二轮复习课时训练：4（含解析）

★ 四川省广安市2014高考英语一轮基础训练题（8）及答案

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (73)

★ 2017届高考英语二轮复习课时训练：5（含解析）

★ 【三维设计】2017版（江苏专用）二轮复习练习：必修1 Unit 1《School life》单元检测（含解析）

★ 2017届江苏省淮安市新马中学高考牛津译林版英语一轮复习活动单：模块6 Unit 1《Laughter is good for you》

★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (19)

★ 四川省广安市2014高考英语一轮基础训练题（10）及答案

★ 安徽省淮南市2014高考英语一轮单项选择及文章训练（6）及答案