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随时随地学习
随时随地学习
1、An excellent teacher is believed to be one who cares about his students but asks for nothing __________.
A. in turn B. in short
C. in return D. in general
2、Ronny's steps________, and there was a moment of absolute silence.
A.died down B.died away C.died off D.died out
3、--Have you moved into the new house? ---Not yet, the rooms ______.
A.are being painted B.are painting C.are painted D.are being painting
4、The little boy who got lost decided to remain ________ she was and wait for her mother.
A. what B. how
C. who D. where
5、— I left my handbag on the train, but luckily someone gave it to a railway official.
— How unbelievable to get it back! I mean, someone ______ it.
A. will have stolen B. should have stolen
C. must have stolen D. might have stolen
6、We won’t start the work until all the preparations __________.
A.are being made B.will be made
C.have been made D.had been made
7、People tend to love agricultural products without the use of fertilizers, pesticides or chemical additives．
A． growing B． grown
C． being grown D． having been grown
8、—It______________to plant trees and grass on the hillside.
—Yes. They help stop soil from being washed away.
A. makes sense B. makes money
C. makes a living D. makes a mistakes
9、Miss Green is always satisfied with the work ________ by Simon, her favourite student.
A．do
B．done
C．doing
D．to do
10、Recycling is one way to protect the environment; reusing is ______.
A. another B. the other
C. one another D. one
11、Killings of African Americans and other ethnic minorities ________ by racial discrimination _______ every now and then.
A．being driven; occur
B．being driven; occurring
C．driven; occur
D．driven; occurring
12、Lily’s drawing may not be excellent, ______ I know she has done her best.
A. so B. although
C. before D. as
13、Xu Beihong is known ______ the world ______ an artist ______ his “horses”.
A．to; as; for
B．as; for; to
C．as; to; for
D．to; for; as
14、He tried to _______ his teachers by using big words in all his essays.
A. import B. imply
C. improve D. impress
15、“Come with me. You will be all right.” He took Polly’s hand, “________ the step here.”
A. look out B. watch out for
C. look at D. watch over
16、It was the middle of night ________ my husband woke me up and told me to watch the football game.
A. while B. that C. as D. when
17、Jeff parents died in the earthquake became an orphan.
A. which its B. whose
C. that the D. that
18、______ makes mistakes must correct them.
A. Who B. Anyone
C. Whoever D. Anybody
19、In order hot to be noticed. Jefferson ________ into the classroom while his teacher was writing on the blackboard
A.looked B.slid C.changed D.ran
20、We to finish the work before dark, but the heavy rain held us up.
A．meant
B．was meaning
C．had meant
D．would mean
21、 Scientists at Israel's Tel Aviv University say—they have created the world’s first 3D-printed heart with human tissue and blood vessels. Although the organ is only as big as a rabbit’s heart, the researchers are hoping the technology could one day be developed enough to help human patients in need of a heart transplant.
Lead researcher Tal Dvir said that while other scientists have managed to 3D—print the structure of a heart in the past, this is the first time anyone has printed an entire heart. “Our results demonstrate the potential of our approach for engineering personalized tissue and organ replacement in the future,”Dvir said in a press statement.
Scientists used fatty tissue taken from human patients to create the heart. Some material in the tissue was reprogrammed to become stem cells. The remaining material was processed into a hydrogel. They used the hydrogel as a printing：“ink”. This method is key to removing the risk that the implant will be rejected by the patient’s body. The team’s next step is to cultivate the organs in a lab and to teach them how to“behave”like hearts. Dvir’s 3D-printed hearts can currently contract, but the cells still need to develop a pumping ability. His team eventually plans to test the hearts in animals.
“Maybe, in ten years, there will be organ printers in the finest hospitals around the world, and these procedures will be conducted routinely, ”Dvir said. Heart disease is the leading cause of death for both men and women, according to the Centers for Disease Control and Prevention. About 610, 000 people die of this disease in America every year—amounting to about 1 in every 4 deaths. There are currently more than 3700 people waiting for a heart transplant in the United States, according to data from the United States Department of Health and Human Services.
【1】What is the purpose of creating the 3D-printed heart?
A.To develop 3D-printed technology. B.To study the hearts of rabbits.
C.To connect hospitals with universities. D.To help patients receive a new heart.
【2】Why does the author mention the current situation of heart disease patients?
A.To appeal to hospitals to reduce medical fees.
B.To show the need to improve the new technology.
C.To urge researchers to develop effective medical devices.
D.To introduce the main reason for heart disease to the public.
【3】What is the third paragraph mainly about?
A.The course of the research. B.The importance of the research.
C.The material of the 3D-printed heart. D.The method of the 3D-printed heart.
【4】What’s Dvir’s attitude towards the new technology?
A.Disapproving. B.Doubtful.
C.Positive. D.Indifferent.
22、A friend of mine named Paul received an expensive car from his brother as a Christmas present．On Christmas Eve when Paul came out of his office，a street urchin (顽童) was walking around the shining car．“Is this your car，Paul？” he asked．Paul answered，“Yes，my brother gave it to me for Christmas.” The boy was surprised．“You mean your brother gave it to you and it did cost you nothing？Boy，I wish…” He hesitated．
Of course Paul knew what he was going to wish for．He was going to wish he had a brother like that. But what the boy said surprised Paul greatly. “I wish,” the boy went on，“that I could be a brother like that.” Paul looked at the boy in surprise, then he said again, “Would you like to take a ride in my car？”
“Oh yes，I'd love that．”
After a short ride，the boy turned and with his eyes shining，said，“Paul，would you mind driving in front of my house？”
Paul smiled a little．He thought he knew what the boy wanted．He wanted to show his neighbors that he could ride home in a big car. But Paul was wrong again. “Will you stop where those two steps are？” the boy asked．
He ran up to the steps. Then in a short while Paul heard him coming back, but he was not coming fast. He was carrying his little disabled brother. He sat him down on the step and pointed to the car.
“There she is, Buddy, just like I told you upstairs. His brother gave it to him for Christmas and it didn't cost him a cent. And some day I'm going to give you one just like it…then you can see for yourself all the nice things in the Christmas windows that I've been trying to tell you about.”
Paul got out and lifted the boy to the front seat of his car. The shining-eyed older brother climbed in beside him and the three of them began an unforgettable holiday ride.
【1】 The street urchin was very surprised when ______．
A. Paul received an expensive car
B. Paul told him about the car
C. he saw the shining car
D. he was walking around the car
【2】 From the story we can see the urchin ______．
A. wished to give his brother a car
B. wanted Paul’s brother to give him a car
C. wished he could have a brother like Paul's
D. wished Paul could be a brother like that
【3】The urchin asked Paul to stop his car in front of his house ______．
A. to show his neighbour’s the big car
B. to show he had a rich friend
C. to let his brother ride in the car
D. to tell his brother about his wish
【4】We can infer from the story that ______．
A. Paul couldn't understand the urchin
B. the urchin had a deep love for his brother
C. the urchin wished to have a rich brother
D. the urchin's wish came true in the end
【5】The best name of the story is ______．
A. A Christmas Present B. A Street Urchin
C. A Brother Like That D. An Unforgettable Holiday Ride
23、High school biology teacher Kelly Chavis knew smartphones were a problem in her class. But not even the students realized how much of a problem the devices were until Chavis did an in-class experiment.
For one class period, students used a whiteboard to count every Snapchat, Instagram, text, call that appeared on their phones. Chavis is among a growing number of teachers, parents and health experts who believe that smartphones are now partly to blame for increasing the levels of student anxiety. “One girl, just during the one hour, got close to 150 Snapchat notifications. 150!” she said.
Jean Twenge, a psychology professor at San Diego State University in California, said it is not a coincidence that youth mental health issues have risen with the number of phones. “This use of phones has led to a loss of sleep and face-to-face interactions necessary for their growth,” she said.
Researchers are still not sure whether phones cause student depression or depression causes phone use. But nearly 60 percent of parents said they worry about the influence of social media on their child’s physical and mental health.
Both schools and parents are starting to take steps to deal with the problem. Many public schools pay outside companies to watch students’ social media activity for signs of anxiety. Other schools invite in yoga teachers and comfort dogs to help calm students.
【1】What’s the purpose of Chavis’s experiment?
A．To see how many students have smartphones.
B．To find out how popular her students are.
C．To show smartphones influence teenagers greatly.
D．To tell her students how to use smartphones wisely.
【2】How did Kelly Chavis feel about the result?
A．Shocked.
B．Excited.
C．Satisfied.
D．Frightened.
【3】Which of the following is true according to Jean Twenge?
A．Students are now under great stress.
B．Students spend too much money on smartphones.
C．Over-using phones cause drops in students’ grades.
D．Over-using phones may harm students’ body and mind.
【4】What might be talked about if the passage is continued?
A．How other schools deal with students’ phones.
B．Whether the ways to handle phones are effective.
C．How some parents deal with their children’s phones.
D．Whether students are willing to give up using phones.
24、Thanksgiving is always on a Thursday.The day after it has been known as Black Friday.It is the start of the holiday shopping season,and it has been the busiest shopping day of the year in the US since 2005.
Most stores offer big sales on Black Friday.They open their doors quite early in the morning.They try to attract shoppers with big discounts(打折).Some items(商品) like TVs and clothes are much cheaper than usual.【1】 They hope that shoppers will buy gifts for other people while they are in the store.
Black Friday is a great time to go shopping.However,there are problems.The biggest one is that there are not enough low-priced items.Each store may only have a few.These items are in great need,so people stand in long lines to get them.【2】 They may be hoping to get a low price on a TV or computer,but not everybody can get one.Some people leave,disappointed.
The situation makes people worried.Some Black Friday events have been crazy.There have been fights over toys among shoppers.Some workers have even been hurt by large crowds.But most Black Friday events are safe and fun.【3】
So where does the name “Black Friday” come from?It was first used in Philadelphia in the 1950s.【4】 In the 1960s,stores tried to rename the day “Big Friday”.It did not stick.The name “Black Friday” continued to spread across the country.It seems that it is here to stay.
Now people all over the country take part in Black Friday events.【5】 Stores have held Black Friday events in the UK,Australia,and Brazil since 2012.
A．Still,if you plan to go,you will expect large crowds and a bit of pushing.
B．People may feel disappointed if they cannot get them.
C．They may wait three to four hours before a store opens.
D．It is even spreading to other parts of the world.
E．Stores may even lose money on these items.
F．It attracts people all over the world.
G．The police called this day Black Friday because of the heavy traffic it caused.
25、 The summer before I went off to college, Mom stood me in her usual _______ behind the ironing board (烫衣板)and said, “Pay attention: I’m going to teach you to _______.”
Mom clearly explained her_______for this lesson. I was going to be_______and needed to learn this vital skill. Also, I would be meeting new people, and properly ironed clothes would help me make a good_______
“Learn to iron a shirt,” Mom said, “and you can iron anything.”
But ironing shirts was not_______work. It didn’t make use of long muscles we used to throw a baseball, and it wasn’t a _______ operation like ice-skating. Ironing was like driving a car on a street that has a stop sign every 10 feet, Moreover, an iron produced steam and it carried an element of _______. If you touched the wrong part of it, you’d get burnt. If you forgot to turn it off when you _______, you might burn down the house.
As for technique, Mom________me to begin with the flat spaces outward, always ________the iron forward into wrinkled (有褶皱的）parts. Collars had to be done right. Mom said they were close to your face, where everyone would________them.
Over the years, I’ve learned to iron shirts skillfully, which gives me a sense of________ . Whatever failures I suffer in my life, an ironed shirt tells me I am good at something. ________, through ironing I’ve learned the method for solving even the most troublesome problems. “________ wrinkles one at a time,” as Mom might have said, “and before long everything will get ironed out.”
【1】A.room B.spot C.chair D.passage
【2】A.iron B.mend C.sew D.dress
【3】A.reasons B.rules C.emotions D.methods
【4】A.helpful B.confident C.powerful D.independent
【5】A.conclusion B.suggestion C.impression D.observation
【6】A.useful B.easy C.special D.suitable
【7】A.direct B.single C.smooth D.strange
【8】A.doubt B.pressure C.surprise D.danger
【9】A.went away B.fell down C.jumped off D.looked up
【10】A.taught B.chose C.forced D.sent
【11】A.removing B.dragging C.pushing D.pulling
【12】A.touch B.design C.see D.admire
【13】A.honesty B.freedom C.justice D.pride
【14】A.Instead B.Besides C.Otherwise D.However
【15】A.Make up B.Deal with C.Ask for D.Rely on
26、阅读下面短文，根据其内容写一篇60词左右的内容概要。
Nowadays, more and more employers and employees work online either time or part-time, and that number is continuously growing. It's believed that flying around the world for face-to-face company meetings is a waste of time and money. An effective choice to get rid of it is to use Web meetings.
A large group of presentations, training classes and meetings are done online without losing the face-to-face experience. Web meetings are online meetings where an organizer invites attendees to listen to or watch an online presentation by presenters. Besides, Web meetings can be recorded for later use. Presenters can take real-time surveys to study how to hold a successful meeting. Some Web meeting software programs can monitor the users' desktop behavior to see if they become distracted from the presentation and begin working on other documents. If so, the program can tell presenters when the listeners lose their attention, and how long the distraction lasts. In this way, the presenters will know which parts of their meetings need improving.
Web meetings can work well because they're hosted on a server （服务器）.Images from the presenter's desktop are taken, uploaded to a server and then downloaded by people who have access to the server. Web meetings require a powerful server to deal with several images a second and "serve" them back to thousands of users at the same time. And companies have two choices when it comes to these servers. They can either buy a special Web meeting server to host their meetings on-site, or they can pay for a Web meeting service every time and let the offsite provider worry about hosting the meetings. The choice depends on how frequently the company holds Web meetings, the average number of people attending the meetings, and the quality of engineering and information technology.
Web meetings are an excellent example of how technology is changing the way we do business. With all the technologies today, the traditional office might soon be a thing of the past.
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