课时跟踪检测（四） ProjectⅠ.单句语法填空1．Do you know how long it was before you realized that he was always helping me?2．The school took the students' requirement into consideration that a party should_be_held (hold) to celebrate the victory.3．Before you leave, make sure to keep the boat tied (tie) to the tree over there.4．With the temperature falling so rapidly, we couldn't go on with the experiment.5．Surprised (surprise) and happy, Tony stood up and accepted the prize.Ⅱ.完成句子1．我们也建议人们多吃蔬菜和水果，减少动物脂肪的摄入，当然，也得控制体重。
We also advise people to eat a diet containing plenty of fruit and vegetables, to reduce their intake of animal fat, and of course, to_keep_their_weight_under_control.2．趁他还没有退休，他正在尽力培养李明。
He is trying his best to train Li Ming before_he_retires.3．妈妈让他弄掉鞋上的泥。
Mother told him to_remove_the_mud_from his shoes.4．随着电脑越来越普及，手写信逐渐让位于电子邮件。
With computers becoming more and more popular nowadays, handwritten letters are gradually making_way_for emails.5．你很难在这个城市找到一个满足你要求的旅馆。
It is hard for you to find a hotel in this city that can meet_your_expectations/requirements.6．即使你申请加入他们的俱乐部，他们也不会同意的。
Even if you apply_to_join_their_club,_they will not approve it.Ⅲ.完形填空It's commonly believed that school kids started taking summers off in the 19th century so they'd have time to work on the farm. Nice as that story is, it isn't __1__. Summer vacation has little to do with working in the __2__ and more to do with __3__，rich city kids playing hooky (逃学) and their parents.Before the Civil War, farm kids __4__ had summers off. They went to school during the hottest and __5__ months and stayed home during the spring and fall, when cropsneeded to be planted and __6__. Meanwhile, city kids hit the books all year long —__7__ included.But as cities got more crowded, they got hotter, __8__ the “urban heat island effect.” That's when America's middle and upper class families started __9__ cities and went to the cooler __10__. And that caused a problem. School __11__ wasn't compulsory back then, and __12__ were being left halfempty each summer.Lawmakers started arguing that kids should get summers off anyway. It helped that, culturally, __13__ time was becoming more important. With the dawn of labor unions and the eighthour workday, working adults were getting more time to t hemselves. Advocates for vacation time also __14__ (incorrectly) that the brain was a muscle, and like any muscle, it could suffer injuries if __15__. From there, they believed that students shouldn't go to school yearround. What is more, air conditioning was decades away, and city schools during summertime were like __16__.So by the turn of the century, urban districts had managed to cut about 60 schooldays from the hottest part of the year. Rural schools soon __17__ the same pattern __18__ they wouldn't fall behind. Business folks obviously saw a(n) __19__ here. The summer vacation business __20__ ballooned into what is now one of the country's largest billiondollar industries.语篇解读：本文是说明文。
文章介绍了学生暑假的由来。
1．A.true B．funnyC．bad D．fair解析：选A 由下文的“Summer vacation has little to do with working in the ...”可推断，文章开头的说法是不“真实的(true)”。
2．A.factories B．schoolsC．fields D．teams解析：选C 由上文的“work on the farm”可知，此处说的是“田地(fields)”。
3．A.smart B．sweatyC．strong D．sweet解析：选B 由第三段中的“But as cities got more crowded, they got hotter”及“went to the cooler ...”可推断，暑假的由来与“出汗的(sweaty)”富裕的城市孩子们以及他们的家长有关。
4．A.always B．neverC．still D．also解析：选B 由下文的“They went to school during the hottest and ... months”可推断，在内战前，农村的孩子们夏天“从来不(never)”休息。
5．A.coldest B．longestC．best D．busiest解析：选A 由下文的“stayed home during the spring and fall”可推断，农村的孩子们在最热和“最冷的(coldest)”月份上学。
6．A.watered B．coveredC．harvested D．cleared解析：选C 秋天是收割庄稼的季节，故选harvested。
7．A.springs B．summersC．falls D．winters解析：选 B 本文主要讲暑假的由来，故此处特别强调内战前城市的孩子们“夏季(summers)”也上学。
8．A.apart from B．in spite ofC．in case of D．thanks to解析：选D 城市变拥挤的同时也变得更热，这是“由于(thanks to)”城市热岛效应的影响。
9．A.loving B．leavingC．damaging D．forgetting解析：选B 解析见下题。
10．A.countryside B．cityC．mountain D．building解析：选A 城市变热时，美国的中上层家庭开始“离开(leaving)”城市，到比较凉爽的“乡下(c ountryside)”去。
11．A.work B．attendanceC．age D．uniform解析：选 B 由第一段末的“city kids playing hooky”可推断，当时上课“出勤(attendance)”并不是强制的。
12．A.hospitals B．busesC．classrooms D．halls解析：选C 大量学生逃学导致每年夏天“教室(classrooms)”里有一半是空的。
13．A.hard B．localC．opening D．spare解析：选D 由下文的“working adults were getting more time to themselves”可推断，“空闲(spare)”时间变得重要起来。