Transportationengineershavealo-优题课

Sometimes we wish we could stop time and go back in time． Well， twice a year， some countries actually decide to（1）　　the time．

As summer begins， some countries， like the US， UK and most of other countries in the EU， move the time forward one hour： 12 o'clock becomes 1 o'clock． This is to give people one more hour of（2）　　． This is called "daylight saving time （夏令时时间）"．

But as winter arrives， you'll notice the darkness stays with us（3）　　． The sun doesn't enjoy being out as often as in the summer． To deal with this， these countries turn the clocks（4）　　one hour： 1 o'clock goes back to 12 o'clock．

Countries have done this for about 100 years． At some point， most of the world has tested with it． In fact， from 1986 to 1991， China used daylight saving time．

By having another hour of sunlight， you can save（5）　　by not needing to turn the lights on． Also， it can help the economy （经济）， as people enjoy shopping when it is brighter． But people think it disrupts （打乱） sleeping habits． And because mornings are darker， the（6）　　of people getting to work and school is a problem．

（1）A． change	B． stop	C． pass
（2）A． sleep	B． sports	C． sunlight
（3）A． shorter	B． longer	C． slower
（4）A． back	B． up	C． forward
（5）A． money	B． energy	C． time
（6）A． life	B． tradition	C． safety

so decide do leave proud happy advise trouble after go

Li Wen is a 16﹣year﹣old boy． He works hard and （1）　　well in school． It is hard to believe that he had much（2）　　in school． His parents moved to the city to look for jobs，（3）　　they couldn't be at home to look（4）　　him． From then on， he became less interested in （5）　　to school and missed classes． Then his parents made a （6）　　to send him to a boarding school． He was shy and had no friends． Life there was difficult for him． One day he told his teacher he wanted to（7）　　the school． His teacher called his parents and（8）　　them to come back and talk with their son in person． Then his parents came back and had a talk with him． This communication changed his life． He realized that his parents would always love him and they would be （9）　　of everything good that he did． Now he is much （10）　　and more outgoing than he used to be．

Once a gentleman was traveling in a train． He felt（1）　　and got down at a station to look for some water． But when he got to the water tap， the train had started． He ran back but（2）　　the train．

It was getting late and he decided to spend the night at the station． The next morning he asked about the next （3）　　． He came to know that the next train was on the other day． So he decided to find a place for a day's stay It was getting（4）　　and he could not find a place near the station．

At last he reached a small village Ile asked a villager （5）　　he could stay in his house for a night． The villager agreed． The villager cooked him food and （6）　　him a room to stay． But he did not ask for anything in return．

At seven in the evening， the gentleman heard a knock at the door， The villager opened the door． It was a （7）　　man in black． He asked the man to pay his debts （债务）．

The next morning， the gentleman （8）　　some money on the bed． When the villager found the money， he also found a note． It said： "You （9）　　me but didn't want any pay from me．

Yesterday I heard the conversation between you and the rich man． I knew that you were in need of （10）　　． This is what you need．"

（1）A． hungry	B． thirsty	C． tired	D． busy
（2）A． caught	B missed	C． got	D． saw
（3）A． bus	B． ship	C． plane	D． train
（4）A． dark	B． clean	C． dirty	D． quiet
（5）A． and	B． or	C． if	D． but
（6）A． gave	B． built	C． had	D． bought
（7）A． poor	B． rich	C． ugly	D． nice
（8）A． forgot	B． remembered	C． left	D． borrowed
（9）A． cooked	B． taught	C． talked	D． helped
（10）A． food	B． money	C． time	D． house

A Seeing Eye dog is very special． One（1）　　thing about having a Seeing Eye dog is the you can go anywhere in the city safely．

I live in Barcelona， Spain． It's a big（2）　　， and there are many cars， but my dog Terra goes everywhere（3）　　me and doesn't let me get hit by a car． Terra also guides me to walk safely in the subway．

I have a baby boy， so another good thing is that my dog watches out for（4）　　， too． I can put the baby in his stroller， and Terra makes sure we are（5）　　okay． I have had Terra for ten years， and I'm happy to have it．

（1）A． small	B． good	C． bad	D． unusual
（2）A． mountain	B． village	C． city	D． room
（3）A． like	B． for	C． behind	D． with
（4）A． him	B． us	C． them	D． her
（5）A． all	B． both	C． still	D． just

用方框中所给单词的适当形式填空，使短文完整、通顺．每词限用一次．

温馨提示：只要有大小写、单词拼写、语法等错误，均不给分．

bad solute cover them patient danger but decide able research

A Cloud of Hope and Danger

A small cloud floats through the air in a hospital operating room （手术室）． In the room a patient， suffering from cancer， lies on a table． The cloud surrounds（包围） the patient，（1）　　her body and filling her lungs（肺）． The cloud is not smoke or steam． It is made of millions of microscopic robots called nano﹣robots（纳米机器人）． These tiny robots move from cell（细胞） to cell in the（2）　　body， destroying the cancer．

Fighting cancer with nano﹣robots is only an idea today，（3）　　scientists say that it could be possible in the future． Using nano﹣robots for good purposes such as fighting disease or repairing the environment may be the（4）　　to many of today's problems．

However， nano﹣robots could be a（5）　　risk as well． Since nano﹣robots are so tiny， they will have to work in large teams of many thousands to many millions． For this reason， nano﹣robots will have to be programmed to build（6）　　． Scientists will not have the ability to build millions of nano﹣robots one by one．

This（7）　　to reproduce is making some scientists worried． What if something goes wrong in the programming？ Quite a lot of crazy nan﹣orobots would be far（8）　　than any disease． Some people think that if they get out of control， nan﹣orobots could destroy the Earth．

What should be done？ Should we continue（9）　　nan﹣orobots or should we search for other methods？ This is one of the many difficult（10）　　that we have to make in the future．