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1、Unit 2Working the landSection Prereading (Warming Up & Reading)基础题单词拼写1Our foreign trade has _ (扩大) during recent years.答案：expanded2The average _ (产量) of the factory is 60 cars a day.答案：output3The children got _ (晒黑的) from a day on the beach.答案：sunburnt/sunburned4He was injured and _ (因此) unable to
2、play.答案：therefore5She is old enough to have the _ (自由) to do what she likes.答案：freedom6The main c_ is wheat and it is grown even on the very steep slopes.答案：crop7Now, as a s_ star, he isnt selfsatisfied at all.答案：super8In the b_ to retake the village, over 100 soldiers were killed.答案：battle9A d_ lat
3、er, the company has gone from strength to strength.答案：decade10Therere no reliable s_ for the number of death in the war.答案：statistics单句语法填空1The mother decided to rid her son _ the bad habit as soon as possible.答案：of2Thanks _ his timely help, I finished the whole work on time.答案：to3Please state your
4、name, address and _ (occupy)答案：occupation4_ (satisfy) with what we did, our teacher began to smile.答案：Satisfied5It is _ (disturb) that the mobile phone is affecting our life.答案：disturbing6We want to make your children equipped _ some special skills.答案：with7We have little _ (free) at work because our
5、 manager runs a very tight ship.答案：freedom8Most of the toys produced in our factory _ (export) to European countries.答案：are exported9Her mother has been struggling _ her illness for many years.答案：against10He made _ clear to make a new life for himself.答案：it能力题阅读理解When a leafy plant is under attack,
6、it doesnt sit quietly. Back in 1983, two scientists, Jack Schultz and Ian Baldwin, reported that young maple trees getting bitten by insects sendoutp1 aparticularw1 smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm. What the plant
7、s pump through the air is a mixture of chemicals known as volatile organic compounds, VOCs forshortp2.Scientists have found that all kinds of plants give out VOCs when being attacked. Its a plants way of crying out. But is anyone listening？Apparently. Because we can watch the neighbors reactw2.Some
8、plants pump out smelly chemicals to keep insects away. But others do double duty. They pump out perfumes designed to attract different insects who are natural enemies to the attackers. Once they arrive, the_tables_are_turned. The attacker who was lunching now becomes lunch.In study after study, it a
9、ppears that these chemical conversations help the neighbors. The damage is usually more serious on the first plant, but the neighbors, relatively speaking, stay safer because they heard the alarm and knew what to do.Does this mean that plants talk to each other? Scientists dont know. Maybe the first
10、 plant just made a cry of pain or was sending a message to its own branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear” the cry. So information was exchanged, but it wasnt a true, intentional back and forth.Charles Darwin, over 150 years ago, imagined
11、 a world far busier, noisier and more intimate (亲密的) than the world we can see and hear. Our senses are weak. Theres a whole lot going on.1What does a plant do when it is under attack?AIt makes noises.BIt gets help from other plants.CIt stands quietly.DIt sends out certain chemicals.答案：D细节理解题。根据第一段中
12、的“. reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm.”可知，植物受到攻击时会散发出某些化学物质。故选D。2What does the author mean by “the tables are turned” in Paragraph 3?A
13、The attackers get attacked.BThe insects gather under the table.CThe plants get ready to fight back.DThe perfumes attract natural enemies.答案：A句意理解题。根据第三段最后一句“The attacker who was lunching now becomes lunch.(上一秒还在吃午餐的袭击者现在就变成了其他生物的午餐)”可知，画线部分的意思是袭击者受到了它的天敌的袭击。故选A。3Scientists find from their studies th
14、at plants can _.Apredict natural disastersBprotect themselves against insectsCtalk to one another intentionallyDhelp their neighbors when necessary答案：B推理判断题。根据第三段第一、三句可知，植物能通过释放化学物质来保护自己免受昆虫的伤害。故选B。4What can we infer from the last paragraph?AThe world is changing faster than ever.BPeople have strong
15、er senses than before.CThe world is more complex than it seems.DPeople in Darwins time were more imaginative.答案：C推理判断题。根据最后一段可推知，世界似乎比它看上去的样子更复杂。故选C。1particular adj. 特别的2.react v. 反应1send out 发出(气味、光亮等)；发送2for short 简称；缩写完形填空Farms are the biggest users of freshwater resources. The Food and Agriculture Organization says agriculture uses seventy percent of all surface water supplies. That is
