A. boxes B. buckets C. sofas D. beds
A、It is London Bridge.
B、It is a bridge.
C、It is a box.
D、It is the bridge.
A、the one below the horizontal
B、the one above the horizontal
C、both give equal acceleration
D、more information is needed
E、none of these
And yet, city life isn't easy.Now scientists have begun to examine how the city affects the brain, and the results are depressing.Just being in an urban environment, they have found, impairs(损害)our basic mental processes.(79) After spending a few minutes on a crowded city street, the brain is less able to hold things in memory, and suffers from reduced self-control.While it's long been recognized that city life is exhausting, this new research suggests that citied actually dull our thinking, sometimes dramatically so.
One of the main forces at work is a complete lack of nature, which is surprisingly beneficial for the brain.Studies have demonstrated, for instance, that hospital patients recover more quickly when they can see trees from their windows, and that women living in public housing are better able to focus when their apartments overlook a lawn.Even these glimpses of nature improve brain performance, it seems, because they provide a mental break from the urban life.
This research arrives just as humans cross an important milestone(里程碑).For the first time in history, the majority of people live in cities.Instead of inhabiting wide-open spaces, we're crowded into concrete jungles, surrounded by traffic and millions of strangers.In recent years, it's become clear that such unnatural surroundings have important implications for our mental and physical health, and can powerfully alter how we think.
This research is also leading some scientists to dabble(涉足) in urban design, as they look for ways to make the city less damaging to the brain.(80) The good news is that even slight alterations, such as planting more trees in the inner city or creating urban parks with a greater variety of plants, can significantly reduce the negative side effects of city life.The mind needs nature, and even a little bit can be a big help.
Which of the following is the main idea of this passage?
A.The city inspires talented people.
B.The city hurts your brain.
C.The city has many pleasures and benefits.
D.The city seriously affects the natural balance.
A.Watching
B.Watch
C.Watched
D.Having watched
In the first place, television is not only a convenient source of entertainment, but also a comparatively cheap one. With a TV set in the family people don't have to pay for expensive seats at the theatre, the cinema, or the opera. All they have to do is to push a button or turn a knob, and they can see plays, films, operas and shows of every kind. Some people, however, think that this is where the danger lies. The television viewers need do nothing. He does not even have to use his legs if he has a remote control. He makes no choice and exercises, no judgment. He is completely passive and has everything presented to him without any effort on his part.
Television, it is often said, keeps one informed about current events and the latest developments in science and politics. The most distant countries and the strangest customs are brought right into one's sitting room. (11) It could be argued that the radio performs this service as well; but on television everything is much more living, much more real. Yet here again there is a danger. The television screen itself has a terrible, almost physical charm for us. We get so used to looking at the movements on it, so dependent on its pictures that it begins to control our lives. People are often heard to say that their television sets have broken down and that they have suddenly found that they have far more time to do things and that they have actually begun to talk to each other again. It makes one think, doesn't it?
There are many other arguments for and against television. We must realize that television itself is neither good nor bad. It is the uses that it is put to that determine its value to society.
What is the major function of paragraph 1?
A.To arouse the reader's concern.
B.To introduce the theme of the whole passage.
C.To summarize the whole passage.
D.To state the primary uses of TV.
A.5 billion
B.10 billion
C.15 billion
D.200 billion
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