【北师大版】2014届高考英语一轮复习指导课时作业：Unit 5 B卷 Word版含解析

　　Unit 5 B卷

　　一、阅读理解

　　A

　　Flying in 2050 is going to be a real pleasure，the engineers at European manufacturer Airbus say，with 360­degree views whenever the“intelligent cabin membrane(客舱壁)”is set on transparent(透明的)．

　　One of their new ideas involves absorbing passenger body heat to meet some of the plane's energy needs，while another refers to seats with self­cleaning fabrics(纺织品)that adapt to each individual body form.The first，business and economy class system would be abandoned，and replaced by individual seating arrangements.The air would be vitamin­enriched，while passengers could enjoy virtual games of golf high up over the clouds，go shopping，or try on the latest fashions in virtual changing cabins.

　　This cabin of the future，whose shape is modeled after that of birds，is part of Airbus's total concept for 2050.CEO Thomas Enders says the company expects the demand for aircraft to go up worldwide despite the on­going problems faced by many airlines，particularly in Europe.“Air travel continues to hold more long­term growth potential than any other sector(领域)，”Enders said.According to Airbus figures，air travel currently makes up 8%，or 580 billion dollars worth of the European GDP.

　　Airbus engineer Champion says that the three biggest current challenges are that people want flying to be cheap，efficient and environmentally friendly.The sector has to find satisfactory ways of meeting these demands，which is why flying will probably look completely different a few decades down the road.“By 2050，the sector will be carrying

　　9 billion passengers

　　around the

　　world，”Champion says.

　　Airbus' visions for the airports of the future no longer include gates.Instead，planes would roll right up to a station，with passengers boarding quickly through several doors，using touch screens to check in.But Champion says the airports themselves may be slow to adjust.“We can come up_with_all_kinds_of_great_stuff，but when a_plane_has_to_circle_for_40_minutes_over_Heathrow_before_landing，a_lot_of_it_gets_lost.”

　　1．According to the engineers，future planes ______.

　　A．will offer passengers a full view of the sky

　　B．will allow people to play golf on board

　　C．will be safer than any other means of transport

　　D．will be the most environmentally­friendly ever

　　2．CEO Thomas Enders tends to think that ______.

　　A．a cabin shape modeled after the shapes of birds is best

　　B．air travel has great potential for economic growth

　　C．European airlines are facing the most serious challenges

　　D．the level of air­travel employment remains high worldwide

　　3．What is implied in the text?

　　A．Airbus will lead the industry.

　　B．Passengers should be happy with the coming changes.

　　C．More people will fly on Airbus planes by 2050.

　　D．Passengers will be completely satisfied with the services of Airbus.

　　4．With the underlined statement，Champion means that ______.

　　A．airports ought to have more gates

　　B．planes in the future will need more time to land

　　C．there should be more doors for passengers to check in

　　D．the airports have to be changed

　　B

　　Most American kids love Halloween treats，but a bucket of Halloween candy can be a dentist's nightmare.Some parents try to get rid of half of the candy after their children go to bed，but dentists say parents also need to separate the good kinds of treats from the bad ones.

　　It is not exactly what a child eats that truly matters，but how much time it stays in his mouth.According to pediatric dentist Dr.Kaneta Lott，the most damaging stuff is something that is sticky or very hard and thus stays in the mouth for a long time.This is because we all have bacteria in our mouths.When we eat，the bacteria take our food as their food and produce an acid that destroys the surface of the teeth，causing cavities to form.The longer the food stays in the mouth，the more likely cavities will develop.Therefore，potato chips are worse than candy because they get stuck between teeth.For the same reason，raisins and crackers are not the best choice.Hard candies take a long time to consume and are also a bad choice for Halloween treats.

　　If children really love candy，dentists recommend that they eat chocolate instead.Unlike hard candies，chocolate dissolves quickly in the mouth.Besides，chocolate contains tannins，which help to kill some of the bacteria in the mouth.But no matter what a child eats，brushing after each meal is still the best way to fight cavities.

　　5．What is the main purpose of this passage?

　　A．To discuss how cavities can be treated.

　　B．To point out the problems with Halloween celebrations.

　　C．To tell parents what sweets are less damaging to their children's teeth.

　　D．To teach parents the meaning of Halloween candy for their children.

　　6．Why are hard candies especially bad for teeth?

　　A．They may break the children's teeth.

　　B．They contain too much sugar.

　　C．They help bacteria to produce tannins.

　　D．They stay in the mouth for a long time.

　　7．According to the passage，which of the following is a better choice for Halloween treats?

　　A．Chocolate.　B．Crackers.

　　C．Raisins.

　　D．Potato chips.

　　8．According to the passage，which of the following is TRUE of tannins?

　　A．They are produced when the bacteria digest the food.

　　B．They help to get rid of some bacteria in the mouth.

　　C．They help chocolate to dissolve more quickly.

　　D．They destroy the surface of the teeth.

　　二、任务型读写

　　阅读下面短文，根据所读内容在表格中的空白处填入恰当的单词。注意：每个空格只填一个单词。

　　Your blood makes a round trip through your body in less than one minute thousands of times a day. It travels through tubes called blood vessels.There are three main kinds of blood vessels—arteries，veins(静脉)and capillaries(毛细血管)．When blood is pumped out of your heart it goes into your largest arteries.These branch into smaller arteries，which

　　branch into still smaller ones.The blood flows from the

　　smallest arteries into your capillaries.

　　Capillaries are bridges between your arteries and your veins.They are the tiniest blood vessels，so small that you can not see them without a microscope.Blood travels from the capillaries into tiny veins.These lead to larger and still larger veins.Finally，the largest veins take the blood back to your heart.

　　Blood feeds your cells，cleans them，and works to keep them healthy.It carries food and oxygen to each cell of your body.The food and oxygen get into cells by passing through the thin walls of your capillaries.

　　Blood cleans all your cells by picking up wastes from them.The wastes pass from your cells，through the capillary walls into your blood.The wastes called urea and uric acid are carried by the blood to our body and urine.The waste gas called carbon dioxide is carried by the blood to your lungs.It leaves your body when you breathe out.

　　Blood also protects you.It has special cells in it that fight germs.The cells in your blood that fight germs are called“white cells”．These are like an army for your body.They kill harmful germs that get into your blood.When a large number of germs enter your body，the number of white cell“soldiers”grows.A lot of blood moves to the area where the germs are.The white cell soldiers attack the germs and kill them.The used white cells and dead germs form the thick yellow liquid called pus(脓)．If the pus is inside a sore on your skin，it may leak out.1.　 about your blood

　　2. ______ blood travels From your heart to the 3.______，the capillaries and your 4. ______ back to your heart.

　　Why you need blood to feed your 5.______

　　to clean your cells by 6.______ up wastes from them

　　to 7.______ your cells stay healthy

　　How blood 8.______ you fighting germs with 9.______ cells

　　helping to form the thick yellow 10. ______ called pus

　　参考答案与解析

　　课时作业(十)

　　Unit 5　B卷

　　一、阅读理解

　　解题导语：40年后的客机会是怎么样的？欧洲飞机制造商空中客车公司最近公布了他们的构想——透明客机。由于这种未来客机采用透明材料制造，乘客可以从万米高空透过舱壁，向上仰望着繁星点点的如墨夜空，向下俯瞰万家灯火的城市美景。

　　1．解析：细节理解题。根据第一段的360­degree

　　views

　　whenever the“intelligent cabin membrane”is set on transparent可知，未来的透明客机能够提供乘客全方位的景色。

　　答案：A

　　2．解析：推理判断题。从第三段的Air travel continues to hold more long­term growth potential than any other sector可推知，空中旅行在经济增长方面潜力最大。

　　答案：B

　　3．解析：推理判断题。结合第四段的The sector has to find satisfactory ways of meeting these demands，which is why flying will probably look completely different a few decades down the road.可推知，飞行方面的变化有可能满足乘客的需求。

　　答案：B

　　5．解析：写作目的题。通过本文，作者主要想告诉父母在万圣节给孩子吃什么甜食对他们牙齿腐蚀小。

　　答案：C

　　6．解析：细节理解题。从文中第二段内容可知，黏性的或硬的甜食在人的口腔里存留的时间长，对人的牙齿损伤最大。

　　答案：D

　　7．解析：细节理解题。从最后一段第一句可知答案。

　　答案：A