Previous studies show that parents tend to be aware of sleep problems in older children

the following EXCEPT ______.

A．careful studies of the work of their forerunners

B．complete involvement in the previous work in their fields

C．very early exposure to basic knowledge and various activities

D．total concentration on the work done previously

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A.women are unwilling to compete with men

B.women are better promoted in other fields

C.women are not as intelligent as men

D.women are not fond of such fields

A.Summarize published clinical trials on bonded oxide ceramic restorations and correlate their results with that of laboratory bond strength testing using the same bonding methods as in the clinical trials.

B. Despite a huge number of published laboratory bonding studies on dental oxide ceramics clinical long-term studies on resin bonded oxide ceramic restorations are rare. The purpose of this review is to present the best available clinical evidence for successful bonding of dental oxide ceramic restorations.

C. Replicate the previous studies.

D.Summarize the huge variety of bonding methods used on dental oxide ceramics and their results in laboratory bond strength testing

ledge on the part of the individual had only been intuitively understood and was best observed in extreme cases. Contrary to the notion of instant "creativity" that was popular in the 1960s, distinguished scientific accomplishment is a matter of opportunity and of continuous and concentrated effort over at least a decade. When Newton was asked how he had managed to surpass the discoveries of his predecessors, in both quantity and quality, he replied, "By always thinking about them." Add to this the comment of Gauss that "if others would but reflect on mathematical truths as deeply and continuously as I have, they would make my discoveries," and it becomes apparent that "instant" scientific discoveries are many long years in the making.

So, too, are accomplishments in many other areas. Psychological studies of the lives of eminent painters, writers, musicians, philosophers, religious leaders, and scientists of previous centuries, as well as prizewinning adolescents in this country today, reveal early, intense concentration on previous work in their fields, often to the near-exclusion of other activities. It appears, though, that science and mathematics, because of their highly specialized and abstract symbolism, may require the greatest concentration and per severance.

The same fundamental thought process, moreover, appear to be required in both elementary and advanced science, as Simon and his colleagues have shown. "The development of literacy, the acquisition of information, and the problem-solving of beginners differ in degree rather than in kind from mental activities of experts. The scarce resources are opportunities and concentration rather than the amount of information available or the processing capacity of the mind, both of which, for practical purposes are unlimited.

The passage says that in the 1960s it was a widespread belief that distinguished scientific accomplishments were ______.

A．made mostly by accident

B．the results of painstaking efforts

C．the results of sudden bursts of creativity

D．made only by distinguished characters

Passage Two

The brain is a seemingly endless library, whose shelves house our most precious memories as well as our lifetime’s knowledge. But is there a point where it reaches capacity？

The answer is no, because brains are more sophisticated than that. Instead of just crowding in, old information is sometimes pushed out of the brain for new memories to form.

Previous behavioural studies have shown that learning new information can lead to forgetting. But in a new study, researchers demonstrated for the first time how this effect occurs in the brain.

In daily life, forgetting actually has clear advantages. Imagine, for instance, that you lost your bank card. The new card you receive will come with a new personal identificatipn number (PIN). Each time you remember the new PIN, you gradually forget the old one. This process improves access to relevant information, without old memories interfering.

And most of us may sometimes feel the frustration of having old memories interfere with new, relevant memories. Consider trying to remember where you parked your car in the same car park you were at a week earlier. This type of memory (where you are trying to remember new, but similar information) is particularly vulnerable to interference.

When we acquire new information, the brain automatically tries to incorporate (合并)it within existing information by forming associations. And when we retrieve (检索) information, both the desired and associated but irrelevant information is recalled.

The majority of previous research has focused on how we learn and remember new information. But current studies are beginning to place greater emphasis on the conditions under which we forget, as its importance begins to be more appreciated.

A very small number of people are able to remember almost every detail of their life. While it may sound like an advantage to many, people with this rare condition often find their unusual ability burdensome.

In a sense, forgetting is our brain’s way of sorting memories, so the most relevant memories are ready for retrieval. Normal forgetting may even be a safety mechanism to ensure our brain doesn’t become too full.

What have past behavioural studies found about our brain？

A.Its capacity actually knows no limits

B.It grows sophisticated with practice

C.It keeps our most precious memories until life’s end

D.New information learned pushes old information out

What do people find about their rare ability to remember every detail of their life？A.It adds to the burden of their memory

B.It makes their life more complicated

C.It contributes to their success in life

D.It constitutes a rare object of envy

What is the benefit of forgetting？A.It frees us from painful memories

B.It helps slow down our aging process

C.It facilitates our access to relevant information

D.It prevents old information from forming associations

What does the passage say about forgetting？A.It can enlarge our brain capacity

B.It helps get rid of negative memories

C.It is a way of organising our memories

D.It should not cause any alarm in any way

What is the emphasis of current studies of memory？A.When people tend to forget

B.What contributes to forgetting

C.How new technology hinders memory capacity

D.Why learning and forgetting arc complementary

请帮忙给出每个问题的正确答案和分析，谢谢！

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B.sho logging current-alarm

C.sho version

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