题目内容

They met for the first time, but they talked happily as if they______ good friends for a long time.

A. have been B. were C．are D. had been

练习册系列答案
相关题目

You are not ________ to unemployment benefit if you have never worked.

A. accustomed B. resigned

C. entitled D. Submitted

It seems that people are gradually losing their smartness as smartphones become increasingly important assistants in their lives. As we rely too much on technology instead of our brains, many people have lost three basic abilities.

The first skill many people have lost is remembering phone numbers. Because phone numbers are stored in smartphone contacts, there's now no need to dial a number or look at it again. This is fine until you need to call someone for help, only to find your phone is not around.

And some people may also have lost their sense of direction because navigation apps can guide people anywhere they want. People get so dependent on them that when they can't use their smartphones, they get lost and anxious.

But the worst lost skills may be social ones, meaning that some people are becoming socially inept(无能的)People often bury themselves in their smartphones. As we're too absent-minded by what's happening in the virtual(虚拟的)some of us have lost conversational skills and sometimes can't even distinguish whether a person is happy or not.

Last August, researchers at the University of California, Los Angeles, studied 51 students aged 11 and 12 who had over five hours' screen time every day. Their task was to tell the emotions of 48 pictures of faces that were happy, sad, angry or scared.

The children made an average of 14. 02 mistakes at the beginning. But after a five-day camp without electronic products, they made only 9.41 mistakes on average.

Luckily, people still have a chance to get these abilities back. You should try to keep your parents' numbers in mind for emergencies. You should also pay more attention to street signs and stores , which will help you to draw a mind map and stop you from getting lost. And the easiest solution to social skill loss is to take a break from electronic products.

1.The underlined sentence in the second paragraph implies that .

A. you are able to turn to others for help

B. others are able to call you anytime and anywhere

C. others are unable to get in touch with you by smartphone

D. you are unable to contact others without your smartphone

2. The experiment by researchers indicated that without electronic products, one could .

A. recognize more facial expressions correctly

B. lose the sense of direction frequently

C. tell different emotions immediately

D.more pictures of faces easily

3.Overusing smartphones, people will probably according to the passage

A. lose face-to-face communication skills

B. have no sense of numbers

C. weaken their senses of hearing and sight

D. fail to find their destination

4.The passage mainly tells us that many people are .

A. becoming no smarter than smartphones

B. benefiting from smartphones' intelligence

C．losing some basic abilities because of using samrtphones

D．trying hard to break away from smartphones’intelligence

5.The writer’s attitude towards electronic products is .

A．critical B．sympathetic

C．supportive D．optimistic

Sorry to have kept you waiting so long，but it’ll still be some time____Mr．Smith is available．

A．when B．before C．after D．Since

The term, culture shock, describes the anxiety produced when a person moves to a completely new environment. This term expresses the lack of direction, the feeling of not knowing what to do, and not knowing what is appropriate or inappropriate. The feeling of culture shock generally sets in after the first few weeks of coming to a new place.

We can describe culture shock as the physical and emotional discomfort one suffers when coming to live in another country or place. Often, the way that we lived before is not accepted as or considered as normal in the new place. Everything is different, for example, not speaking the language, not knowing how to use banking machines and so forth.

Although one can experience real pain from culture shock, it is also an opportunity for resetting one' s life objectives. It is a great opportunity for learning and acquiring new viewpoints. Culture shock can make one develop a better understanding of oneself.

Culture shock has many stages. The first stage is called the "honeymoon" stage. The new arrival may feel excited as everything is new.

In the second stage, a person may encounter some difficult times in daily life. For example, communication difficulties may occur such as not being understood. There may be feelings of discontent, anger, sadness, and feeling incompetence. This happens when a person is trying to adapt to a new culture. Transition (过渡) between the old methods and those of the new country is a difficult process and takes time to complete.

The third stage is characterized by gaining some understanding of the new culture. One may start to feel a certain psychological balance. The new arrival may start to have a feeling of direction and want to belong.

In the fourth stage, the person realizes that the new culture has good and bad things to offer. The person has a more solid feeling of belonging and starts to set goals for living.

The fifth stage is called the " re-entry shock". This occurs when a return to the

country of origin is made. One may find that things are no longer the same. For example, some of the newly acquired customs are not in use in the old culture.

Many factors (因素) contribute to the length and effects of culture shock. For example, the individual's state of mental health, type of personality, previous experiences, familiarity with the language, and level of education. So the five stages are present at different times and each person has their own way of reacting. 64. What do we learn about culture shock?

1.What do we learn about culture shock?

A. It has negative effect on people.

B. Its effect can differ from person to person.

C. It disappears when people return to their homelands.

D. It can be avoided if one can understand the language.

2.Which stage of culture shock is Tommy in?

Tommy moved to France with his parents two months ago.

But now he still can not get used to the life there.

He also has problems in schooling.

Even worse, he doesn't think anybody cares about him.

A. Stage 2. B. Stage 3.

C. Stage 4. D. Stage 5.

3. The main purpose of the passage is to________

A. discuss and clarify B. argue and advise

C. introduce and explain D. compare and evaluate

______ in the training, Marbury couldn't play in the basketball season.

A. Injuring B. Injure

C. Injured D. To injure

The doctor asked him___________ the amount of salt in his diet.

A. to reduce B. reduce C. reduced D. reducing

My new coat is similar ______ yours in color.

A．inB．toC．fromD．with

In a unique research cooperation between Stratasys, Education, R&D departments and MIT’s Self-Assembly Lab, a new process is being developed, known as 4D Printing.

The 4D printing concept, which allows materials to “self-assemble (自行组装)” into 3D structures, was initially proposed by Massachusetts Institute of Technology faculty member Skylar Tibbits. Tibbits and his team combined a strand (缕) of plastic with a layer made out of “smart” material that could self-assemble in water. They advanced this concept by creating materials that can change into several different complicated shapes, though this kind of material remains the bottleneck of 4D technology.

To many people that are just starting to get used to the idea of 3D printers, the name 4D is causing confusion because they cannot understand where this fourth “dimension” coming from. 4D technology shares many of the same principles of 3D printing and is essentially still about creating a new, 3D structure out of certain component; however, Tibbits states the fourth dimension at work here comes from concept of the fourth dimension of time. The difference between these 3D and 4D creations is that these new forms have the ability to transform and adapt over time.

4D printing works through self-assembly — a system where “disordered elements form an “ordered” structure via an interaction. With these 4D printed materials, these disordered materials are strands or sheets of specially designed materials. Environmental changes then stimulate (刺激）a response from them so that they form a preprogrammed shape.

The idea of having adaptable technology that only relies on energy and non-human interactions raises some interesting questions about where 4D printing can be used and the practical applications in dangerous environments. This could mean improved infrastructures in extreme conditions, leading to a reduced need for workers to put themselves at risk, but the potential goes even further than that. The technology promises exciting new possibilities for a variety of applications. A solar panel or similar product could be produced in a flat shape onto which functional devices can be easily installed. It could then be changed to a compact shape for packing and shipping. After arriving at its destination, the product could be stimulated to form a different shape that serves its function. Also it could be used to build furniture, bikes, cars and even buildings. As with many of the ideas being put forward, it is easy to go a step too far into the extreme, but this just shows the potential of 4D in comparison to 3D.

The next stage for the research is to move from printing single strands to sheets and eventually whole structures. And water need not be the process ’ s only energy source.

1.Which of the following displays the fourth dimension of 4D printing?

A. 4D printing creates a new, 3D structure out of certain component.

B. 4D technology reduces need for workers to put themselves at risk.

C. 4D technology can be used in many more fields than 3D printing.

D. 4D printed materials reshape themselves with conditions changing.

2.The major problem concerning the development of 4D printing lies in__________.

A. producing essential 4D printers

B. creating proper smart materials

C. providing a suitable environment

D. promoting practical applications

3.What does the passage lead you to believe?

A. 4D printing will take the place of 3D printing in the near future.

B. Most aspects of our daily life can be affected by 4D printing.

C. 4D printing will benefit humans by saving labor somehow.

D. Smart materials can be transformed into other types of material.

4.It can be inferred from the passage that__________.

A. electricity is not used in 4D technology

B. 4D printing has been applied in industry

C. more potential of 4D is to be discovered

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网