人教版高中英语必修3
课后限时作业(十二) Section Ⅲ Learning about
Language & Using Language
Ⅰ．单句语法填空(建议用时：7分钟)
1．When the fire broke __out__, the people in the building lost their head and ran in all directions.
2．The children cheered __up__ at the news that they would have an adventure. 3．Now __that__ you get a chance, you might as well make full use of it. 4．The old photo called up my memory of the small forest during my childhood, through which __flowed__(flow) a clean stream. 5．I think you should watch out __for__ that man—don’t be cheated by him. 6．Ann is ill, but with careful nursing she will pull __through__ soon. 7．The heavy curtain blocked __out__ the light, which made me uncomfortable. 8．He escaped __being killed__(kill) in the big fire but his wife and daughter didn’t. 9．It’s said that the power plant is now twice __as__ large as what it was. 10．The sun gives off light and warmth, which makes it possible for plants __to grow__(grow)．
Ⅱ．阅读理解(建议用时：7分钟)
Businessman Elon Musk says his company is building a powerful, reusable rocket and a spaceship that may travel to the planet Mars. “The spacecraft would eventually be able to take as many as 100 people and their equipment to the red planet，” he said. He wants to establish a city on Mars. He said the planned city would be able to support itself—complete with the ability to make iron, as well as pizzas.
Musk wants human beings to be able to live on more than just one planet. And he said the best way to do that is to first colonize(建殖民地) Mars. He wants many people to be able to travel to the red planet.
“Really the key is making this affordable to almost anyone who wants to go…”
“Reusing rockets and spaceships will help lower the cost for each person，” he explained. The spaceships would also be able to refuel(补给燃料) in orbit. He suggested the production of methane(甲烷) and oxygen on Mars would provide fuel for the trip back home.
Musk says a self-supporting colony on the planet would require about 1 million people. To
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人教版高中英语必修3
get them there and to build the colony, it would take between 40 and 100 years—or about 10,000 flights with 100 people per flight. Musk said the trip would last between 80 and 150 days. Eventually, the cost would go down.
“The very first flights will be fairly expensive, but the architecture allows for a cost per ticket of less than $200,000.”
No date has been set for the first flight. But Musk said he wanted to send the first manned mission to Mars by 2024. He added that he plans to start transporting supplies to the planet as soon as 2018.
Musk invited other companies to join the Mars effort, which reportedly would require about a $10 billion investment.
语篇导读 本文为记叙文。商人Elon Musk声称，他的公司正在建造可循环使用的火箭、飞船，这样就会使去火星旅行的成本降低，他还计划在火星上建立殖民地。
1．What will Musk do to make the trip to the Mars cheap? A．Build a reusable rocket and spaceship.
B．Increase the number of passengers on the spaceship. C．Take less equipment on the spaceship. D．Establish a city there and never come back.
解析 A 细节理解题。根据第四段第一句可知，制造可循环利用的火箭、飞船可降低旅行成本，故选A项。
2．If the spaceship returns to the earth, where will the fuel come from? A．Sunlight. C．Oil.
B．Gas. D．Nuclear.
解析 B 细节理解题。根据第四段最后一句可知，飞船返回地球的燃料是火星上生产的甲烷和氧气，二者都是气体，故选B项。
3．According to Musk’s plan, when will the first manned spaceship be sent to the Mars? A．By 2018. C．By 2028.
B．By 2024. D．By 2030.
解析 B 细节理解题。根据倒数第二段第二句可知，他希望在2024年前发射载人的火星飞船，故选B项。
4．What is the main idea of the passage? A．Musk makes a plan for Mars colony.
B．Reusable rockets and spaceships are being built. C．The Mars is suitable to live on for humans.
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人教版高中英语必修3
D．The trip to the Mars will be cheaper.
解析 A 主旨大意题。通读全文可知，Musk计划在火星上建立殖民地，为了降低旅行成本，他将建造可多次使用的火箭和飞船，故选A项。
Ⅲ．完形填空(建议用时：18分钟)
Dandelions(蒲公英) are common weeds that grow in many places around the world. In different __1__, dandelions take different shapes. Scientists have long __2__ that different habitats led to the creation of __3__ species, and that differences in form are actual proof of different species. __4__, according to Turesson, it is also possible that a __5__ species takes different shapes dependent on the habitats it __6__ in. To study this, I have looked at two dandelions growing in different habitats. The one, __7__ I will call Dandelion 1, grows in a grass field that lies in the __8__. The other dandelion, Dandelion 2, grows in the shadow, e．g. __9__ the trees or behind a shed. The grass field is hot and __10__. The shadow is cool and wet. So, what are the __11__ between Dandelion 1 and 2? Dandelion 1 is dark green, and its __12__ are short and quite thick. Most of the leaves lie __13__ on the surrounding grass. The flowers are short. Dandelion 2, on the other hand, looks very different. The leaves are long and __14__ green.Most leaves stand in a vertical(垂直的) position. The flowers also __15__ tall. Dandelion 2 __16__ strong and tall. It is clear that it grows very well in the __17__, and it has enough __18__ and space to grow into a big plant. Dandelion 1, on the other hand, is small and dark. It seems that the __19__ in the grassland make it difficult for this dandelion to grow into a big plant.
__20__, the conditions in the two different habitats result in different shapes for these dandelions. For Dandelion 1, the sun makes the grass field hot and dry. In order to save water, it grows short and thick leaves.
1．A.houses C．parks 2．A.disagreed C．believed 3．A.new C．old 4．A.However C．Thus 5．A.special C．strange 6．A.plants
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B．habitats D．countries B．provided D．calculated B．good D．bad B．Therefore D．Otherwise B．different D．single B．works
人教版高中英语必修3
C．takes 7．A.what C．that 8．A.world C．sun 9．A.under C．upon 10．A.humid C．soft
11．A.similarities C．differences 12．A.seeds C．weeds 13．A.flat C．dead 14. A．dark C．artificial 15．A.lie C．stand 16．A.sounds C．feels 17．A.water C．shadow 18．A.sunshine C．honey 19．A.conditions C．situations 20．A.Fortunately C．Consequently
D．grows B．which D．when B．mountain D．valley B．over D．between B．wet D．dry B．advantages D．disadvantages B．leaves D．woods B．apart D．dry B．bright D．familiar B．break D．perform B．smells D．looks B．sun D．grassland B．leaves D．water B．occasions D．preparations B．Obviously D．Accidentally
语篇导读 本文为说明文。作者做了一个实验，来证明两种不同的生存环境会让蒲公英具有不同的外形。
1．解析 B 根据下文及多次提到的habitats可知，此处指蒲公英是多地常见的植物，在不同环境中生长的蒲公英有不同的外形。habitat栖息地，符合语境，故选B项。
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