2017届高考英语一轮复习课件：Unit21 Human Biology(北师大版)_高考复习指南

2017届高考英语一轮复习课件：Unit21 Human Biology(北师大版)

　　cater to 活学活用基础再现根据括号中的解释，从课文中找出恰当的短语完成下列句子。 1．Well，__________(in any case)，we won't starve! 2．You should start work______________(at once)． 3．I tried________(uselessly) to get Joan to come with me. 4．If you want to win the match，you must ________your opponent _____________(quit...in the way)． 5．We must achieve our goal __________(whatever happens)． at any rate straight away in vain stop in its tracks at all costs 基础再现 6．He did it not by design but ________(with casualness)． 7．How does she keep smiling after all she has ____________(suffer)? 8．We'll have to ________(delay) going on vacation until you're better. 9．Half the population was ________(remove) by flood. 10．Isn't it time you____________(begin) doing the work? at random gone through put off wiped out got down to 　Ⅳ.语篇学习基础再现 ⅰ.课文内容语法填空阅读课文，然后按照课文内容在空格处填入一个适当的词，或使用所给词语的正确形式完成下面短文。 Nowadays，the athletes become stronger and faster. It would have been easy for them to break the world records if they 1.___________(take) part in the first Olympic Games. But sadly，records have fallen in track and field year after year 2._________ improvements in records have begun to slow had taken and 基础再现 down. What's worse，in order to break records，some athletes take chances to take drugs to enhance their performance.Taking these drugs is regarded 3.______ doping，which is an 4.__________ (legal) way in the sports world. Although the drugs can enhance performance，they can be seriously harmful to the health in later life for those 5.________ abuse them. Unfortunately，it is not easy to catch athletes using illegal drugs. 6.________，doping is not the only problem we need to worry