课时分层作业(四)
Ⅰ.单词拼写
1．The force of gravity(地球引力) makes things fall to earth.
2．The competition has been thrown wide open by the abnce(缺席) of the world champion.
busy的反义词3．I'm not bothered(担心) about the cost—you're the one who's making an issue of it.
4．A copy of the report is available for you to peru at your leisure(闲暇)．
5．The workman was disciplined(惩罚) by his company but not dismisd.
6．He said he had not discusd the matter with her.Furthermore(再者)，he had not even contacted her.
7．She never discovered the true circumstances(情形) of her birth.
8．She did none of the maintenance(保养) of the vehicle.
9．For each side of the subject，think carefully and evaluate(评估) it.
10．He was not clear on the preci nature of his mission(使命)．
Ⅱ.阅读理解
A
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 itlf—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.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 ”
“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 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 t for the first flight.But Musk said he wanted to nd the first manned mission to Mars by 2024.
Musk invited other companies to join the Mars effort，which reportedly would require about a $10 billion investment.
【语篇解读】 本文为一篇记叙文。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。
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 pasngers on the spaceship.
C．Take less equipment on the spaceship.
D．Establish a city there and never come back.
A [细节理解题。根据第一段第一句和第四段第一句可知，制造可循环利用的火箭、飞船可降低旅行火星的成本，故选A项。]
2．If the spaceship returns to the earth，where will the fuel come from?
A．Sunlight. B．Gas.
C．Oil. D．Nuclear energy.诗经邶风式微
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古装衣，二者都是气体，故选B项。]
3．According to Musk's plan，when will the first manned spaceship be nt to the Mars?
A．By 2018. B．By 2024.
吃橙子有什么好处C．By 2028. D．By 2030.
B [细节理解题。根据倒数第二段第二句可知，他希望在2024年发射载人的火星飞船，故选B项。]
B
We all need to eat，and when we go to buy food at the supermarket，we're offered many choice.But we often buy food that's been produced in huge amounts and that's travelled many miles before it ends up on our plate.So for some，growing their own food
is a better choice—and it tastes good too!
From growing vegetables in little pots on your balcony to taking care of a small plot of land，there are many ways to produce homeg索超rown food.It can be backbreaking work digging，weeding and watering the soil，but the result is fresh，homegrown fruit and vegetables，helping us keep a “fiveaday”diet.
The recent pandemic lockdown means demand for homegrown food has en a comeback in the UK.Miriam Dobson from the University of Sheffield，told the reporter that some people have been spending a lot of their time on their plots，growing plenty of fresh fruit and vegetables—which，at times，have been challenging to buy in supermarkets.She says “Coronavirus has reminded people of the weakness within our global food system.In such a difficult time，interest in lfsupport ris.”
But for tho with limited space，a solution to grow your own vegetables lies clor to homeusing pots.Sheila Brand lives in a thirdfloor flat in Rotterdam.She has managed to grow tomatoes and eggplants and is already harvesting raspberries.She told the reporter
watching the plants grow “is very exciting：‘Oh it's got a new leaf！’”
As well as the benefits of saving money and enjoying tasty food，growing your own from a balcony or window ledge not only improves your wellbeing and immediate environment，you can actually grow a lot of vegetables.So，maybe it's time for us all to get planting and develop our green fingers!
【语篇解读】 本文是一篇议论文。文章介绍了人们对于种植食物的感受以及自己种植食物的好处。
4．A “fiveaday” diet (Paragraph 2) probably refers to a diet that include every day.
出国英文A．five meals
B．enough fruit and vegetables
C．five kinds of rice
D．plenty of water
B [推理判断题。根据第二段“From growing vegetables in little pots on your balcony to taking care of a small plot of land，富有哲理的诗句there are many ways to produce homegrown food.It can be backbreaking work digging，weeding and watering the soil，but the result is fresh，homegrown fruit and vegetables，helping us keep a ‘fiveaday’diet.”可推知，“five陶渊明生平aday”饮食可能是指每天吃足够的水果和蔬菜。故选B。]
