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1、1 课后限时作业 (十) ( 见课时作业P19) 语言知识练 . 单句语法填空 1Up to now, large quantities of food have been sent(send) to Africa to save the starving people. 2More and more people realize that the key to solving(solve) the problem is to reduce(reduce) pollution. 3Tom is the first student to work(work) out the math probl
2、em. 4Since then finding ways to grow(grow) more peanuts has been his life goal. 5Does he have the ability to do(do) the work? 6The professor thought that the idea the young engineer brought up was worth considering. 7Parents always support their children in their education. 8It has been discovered t
3、hat the traffic accident resulted from the drivers careless driving. 9We are planning to replace the old machines with/by some new ones. 10We cant figure out why quite a number of insects, birds and animals are dying out. . 句型训练 1政府正在努力寻找提高食品安全的方法。 The government is trying to find a way to improve f
4、ood safety. 2他感觉很难受，把吃的东西全吐了出来。 He felt so sick that he brought up what he ate. 3由于学习努力，她获得了奖学金。 She won the scholarship as a result of her hard work. 4如果你在一个大家庭中长大，你更有可能培养与他人融洽相处的能力。 If you grow up in a large family, you are more likely to develop the ability to get on well with others. 5问题是如何提高我们的
5、英语口语水平。 The question is how to improve our spoken English. . 课文语法填空 Yuan Longping is a 1.leading(lead) figure in the rice-growing world, born and brought up in China. When he was a boy, he was educated in many schools, and was 2 given the nickname, “the student 2.who/that asks questions.” He was int
6、erested in plants from 3.an early age, and he studied agriculture in college. 4.As a young teacher, he began experiments in crop breeding. He thought there was only one way 5.to have(have) more rice quickly. That was to cross different species of rice plant. Then he began his search 6.for a special
7、type of rice plant. It had to be male and sterile. When the 7.naturally(nature) sterile male rice plant was discovered in 1970, it was a breakthrough. As a result, Chinas rice production rose 8.by 47.5% in the 1990s. And 50 thousand square kilometers of rice fields 9.were converted(convert) to growi
8、ng vegetables and other cash crops. 10.Following(follow) this, Yuan Longpings rice was exported to some other countries. 高考题型练 . 阅读理解 When Gitanjali Rao shared how she likes “findingsolutions to real problems”， it was hard to imagine this dynamic girl could settle a problem that had escaped scientis
9、ts for years. In just three months, Rao came up with a device that can replace the costly and lengthy tests currently used to reliably determine lead levels in our fresh water. Inspired by the current litigation(诉讼 ) in Flint, Michigan, a case of water pollution from 2014 until present, Rao designed
10、 a new testing system that resulted in her being named “Americas top young scientist” for 2017. Rao had been following the water problem for about two years. She was amazed by the number of people affected by lead pollution in water and wanted to do something to change this. Rao spent months trying
11、to convince local high schools and colleges to give her lab time to continue her experiment. At home, Rao worked on her project in the “science room ” she asked her parents to create for her. Rao has created a device that uses three parts: a cartridge, a Bluetooth reader and an app. To put it simply
12、, the cartridge contains carbon nanotubes( 纳米管 ) that react to lead. This reaction is then registered by the Bluetooth reader, which sends a signal to a mobile app that can tell you immediately if your water is safe to drink. Rao appropriately named the device Tethys and is hoping to make a little i
13、mprovement to get the device on the market. While we may not be aware of any lead pollution present in our aging pipelines, lead poisoning can cause delays in physical and mental development. With Rao believing that “the purpose of science is to make a difference”， her incredible invention could mak
14、e a difference to millions of 3 people in the United States. 一个女孩发明了一款可以检测水中铅含量的装置，从而解决了一个多年来科学家忽视的 问题。 【熟词生义】lead 常用义：v. 引领生义：n. 铅 put 常用义：v. 放，安置生义：v. 表达 reader 常用义：n. 读者生义：n. 阅读器 1What do we know about Raos device? AIts cheap and quick. BIts cheap and inaccurate. CIts expensive and reliable. DIts
15、 portable and time-consuming. 解析 A推理判断题。根据第二段第一句可推知，与以前又贵又费时的设备相比，Rao 所发明的设备既便宜又省时，与第三段最后一句相呼应，故选A项。 2What made Rao have the idea of designing the device? AHer parents suggestions. BHer desire for winning the award. CHer interest in settling real problems. DThe water pollution litigation in Flint. 解
16、析 D细节理解题。根据第二段第二句可知，Rao设计这种装置的想法是受一起水污 染诉讼的启发，故选D项。 3What do the carbon nanotubes function as? ASending immediate signals. BDetecting the presence of lead. CRecording the reaction results. DShowing the water quality results. 解析 B细节理解题。 根据第三段倒数第二句可知，这个碳纳米管可以对铅起反应，即 可以检测出水中是否含有铅，故选B项。 4What does the author think of Raos invention? AIt will lead Rao to make a fort
