Unit 21 Human Biology 学生用书P154 单句语法填空1_(fortune)，the fire was discovered soon after it broke out.答案：Fortunately2The new plan was strongly _(oppose) by the people at the meeting.答案：opposed3China and the United States have reached an agreement to import 14 extra foreign films _(annual)答案：annually4As we all know，many old people have a very limited _(tolerate) to cold.答案：tolerance5The man said that the library was _(temporary) closed for repairs.答案：temporarily6Good shoes，clothes and a backpack are the basic _(equip) you need for your hiking.答案：equipment7Under _ circumstances will her parents allow her to marry such a selfish man.答案：no8You could answer most of the questions now if you _(review) the lessons last night.答案：had reviewed9He neednt have stood in a queue；he should _(get) the ticket from the machine.答案：have got10The disease robbed the girl _ the chance to be a famous dancer.答案：of 单句改错1He offered to buy some equipments for the new school._答案：equipmentsequipment2She said under no circumstance would she give up her plan._答案：circumstancecircumstances3At the meeting，most of us were opposed to carry out the plan._答案：carrycarrying4What was it that made him postpone buy a new house for his parents? _答案：buybuying5I would go there on foot rather than to take a bus._答案：去掉to 单元语法条件句和混合条件句；表示推测的情态动词单句语法填空1If mother _(tell) me the truth，I wouldnt have made such mistakes.答案：had told2If you had studied harder before，you _(be) a college student now.答案：would be3I didnt hear the phone.I must _(be) asleep then.答案：have been4I could _(work) out the problem，but I was too careless.答案：have worked5The boy has failed again！He _(work) harder last term.答案：should have worked 教材与语法填空根据课文内容，在空白处填入1个适当的单词或括号内单词的正确形式。Athletic performances have 1._(continue) improved since the first Olympic Games.However，improvements 2._(begin) to slow down recently.While 3._(talk) about breaking records，we come across the issue of performanceenhancing drugs，4._ are originally developed to help people with illnesses，but they are often used by some athletes to perform 5._(well) than usual. 6._ other words，doping is a fundamental form of cheating.Unfortunately，it is difficult to catch athletes 7._(use) illegal drugs.The winners have to be tested 8._ other participants are only tested at random.New drugs are developed all the time and drug tests for sporting events are often one step behind.In the future another issue is genetherapy.Athletes who have their genes 9._(change)might perform much better in the match.In todays world，if doping and genetherapy continue to 10._(affect) the outcomes of major sporting events，the Olympic spirit will have lost its meaning.答案：1.continually2.have begun3.talking4.which5.better6.In7.using8.while9.changed10.affect 话题知识与写作()根据要求运用本单元所学知识完成下面小作文。1最近流感正在我国广泛传播，所以我们学校寻求有效措施，把这种疾病赶出校园。(seek；wipe out)2一些措施是强制性的。(compulsory)3在任何条件下我们都不能随意吃东西。(circumstance；at random)4我们每个学生应该开始着手做些事情来消除这种疾病。(get down to；rid.of)_()下面是李华的一篇作文，文中有五处错误，改正错误并背诵该文。Recently, the flu is spreading wide among people in our country, so our school is seeking effect measures to wipe out the disease. And some measures are compulsory. Under no circumstances we put some food in our mouths at the random. Each of the student should get down to the work to rid the disease of our school.答案：Recently, the flu is spreading among people in our country, so our school is seeking measures to wipe out the disease. And some measures are compulsory. Under no circumstances we put some food in our mouths at random. Each of the should get down to the work to rid the disease of our school.1