1、Unit 6 课下题型练(三) Developing ideas.阅读理解AWind turbines (涡轮) and solar panels that generate electricity are examples of “green” technology.A new study finds that such renewable energy might be green in another sense.Large collections of those turbines or solar panels appear capable of bringing rains to
2、the desert and would allow more plants to grow.Building large wind or solar farms just to study their question was not an option.It would be too costly.So experts Kalnay and Safa developed a model of North Africas Sahara Desert to find out how wind turbines and solar farms might alter the deserts cl
3、imate.The team ran its model several times.In one run, it assumed that people would set up wind farms only.Another run assumed people would install just solar farms.A third assumed people would build both.They would affect the deserts weather with temperature and average daily rain increased but dif
4、ferently.Installing a mix of solar farms and wind turbines brought about a bigger change not in temperature but in rainfall.In the Sahara, having both wind and solar farms more than doubled the amount of rain that fell, up to 215.4 millimeters per day.The models predicted that the average rainfall w
5、ould increase over time, as more plants grew.Plants move water from the ground to the air.Warmer air can carry more water.So as this air rises, it can ferry more water up to become clouds.Those clouds can release rain, relieving the thirst of plants below.Over time, this process repeats itself over
6、and over.This positive feedback can greatly boost rains.Such rainfall changes could lead to better agriculture, says Safa.“More rain also would help wild plants grow.We believe that the countries in the Sahara should seriously consider investing in wind and solar power，” he added.语篇解读：本文是一篇说明文。文章介绍了
7、一项新的研究发现，可再生能源的使用能够增加沙漠地区的降雨量，有助于植物的生长。1What is the new finding of the research?ADeserts will be suitable for farming.BIt costs much to get deserts greener.CRenewable energy can green a desert.DClean energy helps plants grow better.解析：选C细节理解题。根据第一段中的A new study finds that such renewable energy might
8、 be green in another sense.Large collections of those turbines or solar panels appear capable of bringing rains to the desert and would allow more plants to grow.可知，研究发现这种可再生能源似乎能够给沙漠带来雨水，并能让更多的植物生长。换句话说，这些可再生能源可以绿化沙漠。故选C。2What discouraged experts from building energy farms?AHigh construction expens
9、es.BA lack of suitable test sites.CShortage of manpower.DTerrible climate.解析：选A细节理解题。根据第二段中的Building large wind or solar farms just to study their question was not an option.It would be too costly.可知，建造能源农场不是一个好的选择，因为太贵了。由此可推断出，阻止专家们建造能源农场的是高昂的建筑费用。故选A。3What was the advantage of the third run?ASavin
10、g more energy with less cost.BDoubling global rainfall per year.CRaising daily rainfall in the desert.DDecreasing temperature in the desert.解析：选C细节理解题。根据第三段中的A third assumed people would build both.和Installing a mix of solar farms and wind turbines brought about a bigger change not in temperature bu
11、t in rainfall.In the Sahara, having both wind and solar farms more than doubled the amount of rain that fell, up to 215.4 millimeters per day.可知，在第三次实验中，既建造了风力发电厂，又建造了太阳能发电厂，这种情况下，降雨量增加了一倍多，达到每天215.4毫米。由此可推断出，第三次实验的优势是增加了沙漠的日降雨量。故选C。4What may Safa advise the countries in the Sahara to do?ABuild more
12、 farms to grow crops.BSave more water for agriculture.CInvest in wind and solar power.DConsider moving to other places.解析：选C推理判断题。根据最后一段Safa说的话可知，Safa建议撒哈拉沙漠地区的国家应认真考虑投资风能和太阳能，因为这有助于野生植物的生长，对环境是有好处的。故选C。BTo grow sugary dates in the sand, Siwas farmers must first make the desert suitable for farming.
13、An oasis (绿洲) in Egypt, Siwa has been home to humans for thousands of years.Since ancient times, the oasis has hosted farms producing some of the most valuable dates in Egypt, and sugary dates have appeared on Egyptians tables.The desert environment in Siwa is not quite fit for plants to grow.For ex
14、ample, the water there contains much salt.However, with local peoples efforts, the Siwa oasis contains complex agricultural fields, where date trees, crops and other plants grow in harmony.That impressed me a lot during my visit to the oasis.To make a new piece of field, farmers first remove the top
15、 soil and replace it with a mixture of sand and waste matter from animals.The first plants are medicinal plants.Then, farmers plant date trees and olive trees.These farming skills are passed down from generation to generation.To grow date trees is demanding.And it takes 10 years for a new date tree
16、to mature, but once it does, the tree produces generous fruit: around 110 pounds of dates per year.Each farmer picks dates with the skilled hands.They climb the trees using nothing more than a belt.In total, Siwa grows more than 25,000 tons of dates from 280,000 trees per year.The dates can be eaten
17、 fresh, or made dry.Every part of the date tree is significant in Siwa, from leaves made into beds and boxes to wood used to build houses.And then, of course, theres the fruit itself.The dates can be cooked with goat meat or mixed with eggs for breakfast.They can also be mixed with flour, water, and
18、 olive oil, and boiled slowly to make a local dessert.Local farmers once developed many unique date varieties, which their camels carried to Cairo.But later many of those varieties perished.And today only several major varieties remain and some have become quite rare and been at risk.The 1985 constr
19、uction of a road in the oasis made the survival of local agricultural tradition even tougher.语篇解读：本文是一篇说明文。文章主要介绍了Siwa的农民克服地理环境上的困难，用智慧和努力在沙漠上种甜枣的故事。5What can we learn about sugary dates from Paragraph 1?AThey can adapt to tough environment.BThey have existed for a long time.CTheyre introduced to Eg
20、ypt from abroad.DTheyre the most valuable fruit in Egypt.解析：选B细节理解题。根据第一段中的Since ancient times, the oasis has hosted farms producing some of the most valuable dates in Egypt, and sugary dates have appeared on Egyptians tables.可知，甜枣已经存在很长时间了。故选B。6What impressed the author a lot during his visit to Si
21、wa?AThe great variety of plants grown there.BThe hard but happy life of local people.CThe great complexity of the local agriculture.DThe local farmers wisdom and contribution to farming.解析：选D细节理解题。根据第二段中的However, with local peoples efforts, the Siwa oasis contains complex agricultural fields, where
22、date trees, crops and other plants grow in harmony.That impressed me a lot during my visit to the oasis.可知，在Siwa访问期间，当地农民的智慧和对农业的贡献给作者留下了深刻的印象。故选D。7Whats Paragraph 4 mainly about?APeoples preference for dates.BThe introduction to local food，CThe usage of date trees different parts.DThe locals high e
23、xpectations of date trees.解析：选C段落大意题。根据第四段中的The dates can be eaten fresh, or made dry.Every part of the date tree is significant in Siwa, from leaves made into beds and boxes to wood used to build houses.And then, of course, theres the fruit itself.可知，第四段主要介绍了枣树不同部位的用途。故选C。8What does the underlined
24、word “perished” in the last paragraph probably mean?ADied out.BSpread out.CGot created. DBecame known.解析：选A词义猜测题。根据画线词后面的And today only several major varieties remain and some have become quite rare and been at risk.可知，画线词所在句意为：“但后来这些品种中的许多都灭绝了。”由此推知，画线词perished与died out意思接近。故选A。.阅读七选五阅读下面短文，从短文后的选项
25、中选出可以填入空白处的最佳选项。选项中有两项为多余选项。Be a Green ChildWhat does it mean to be green? “Green” is more than just a color. 1 Why green? Plants are green, and without them the Earth wouldnt be such a lovely home for us human beings.What can we do? Heres a fourstep guide to being green.Reduce It! 2 For instance, a
26、 shorter shower means you use less water and less fuel since your house uses fuel to run the water heater that warms up the water.Reuse It!Sometimes people call ours a “throwaway society”It means that were always throwing away old stuff (东西) and buying new stuff. 3 For instance, if your baby brother
27、 becomes older and loses interest in his plastic basketball hoop (篮圈), why not give it to another family who has a little kid?Recycle It!Recycling has never been easier.Many communities will pick it up right in front of your house and some towns even require it.Recycled goods go to a recycling cente
28、r, where they can be turned into new cans, bottles, and paper.Enjoy It!Its true that rubbish and pollution are problems, but the Earth remains a huge and beautiful place thats ready for you to explore. 4 Go for a hike, visit local nature centers and gardens, and climb up mountains.But before you tra
29、vel the globe, take a look at your own backyard.Is there a spot where you could plant a tree or put in a little fruit or vegetable garden? 5 AIt also means taking special steps to protect the environment.BMany times, even if you no longer need something, someone else just might.CYou can start locall
30、y by visiting the naturally beautiful spots in your city.DTurn off the water when youre brushing your teeth.EGet out there and get your hands dirty.FYou can watch with pride as your tree takes root and your garden plants grow.GWhen you use less of something, you do a good thing for the Earth.语篇解读：本文
31、是一篇说明文。文章主要介绍了“绿色”生活的真正含义以及如何去践行“绿色”生活。1选A上文提到“绿色不只是一种颜色”，为了与开头问句中的mean呼应，所以此处应选择进一步解释的句子。故选A。2选G本段小标题为“减少使用”，此处应选择表达“减少使用”意思的选项，下文为举例，故选G。3选B本段小标题为“重复使用”，下文举例说，自家孩子长大后不需要的篮球筐可以给别人家小孩，有些东西自己不需要但也许别人需要，因此此处应选择跟“重复使用”相关的选项。故选B。4选C上文提到“地球等待你探索”，因此此处应选择与游览、旅游相关的选项。故选C。5选F上文提出问题“你家后院有能种树或者蔬菜的地方吗？”，所以F项(你
32、可以自豪地看着你种的树生根，园中的植物长大)承接上文，符合语境。故选F。.应用文写作假定你是李华，上周六，你校学生会组织了一次参观雅琳农业生态园的活动。请你给校英文报写一篇报道，活动内容包括：1观赏花草；2采摘蔬果；3了解现代农业。注意：1.词数80左右，题目已为你写好；2.可以适当增加细节，以使行文连贯。Students Visit to Yalin Ecological Garden 参考范文：Students Visit to Yalin Ecological GardenLast Saturday, some students took part in an activity orga
33、nized by the school Student Union.They paid a visit to Yalin Ecological Garden.Upon arrival, they were greatly attracted by the garden.They admired various beautiful flowers, trees and plants.Then, they went into the fields to pick fruit and vegetables.They also learned a great deal of knowledge about modern agriculture from the gardeners.This activity benefited the students a lot.It not only broadened their horizons but also raised their awareness of green life.