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A) The principal quantum number
B) The second quantum number
C) The third quantum number
D) The fourth quantum number
答案
更多“Four quantum numbers characterize an electron as to its size, shape, and spatial orientation. The nu”相关的问题
第2题
The numbers in Paragraph Four are used to support the opinion that______.
A．Hispanics are not so politically concerned as the black
B．there are fewer Hispanic statesmen than the Black ones
C．it is time for Hispanics to make a voice in political affairs
D．the number of Hispanic statesmen is small in the U. S.
第3题
What point is made about recruitment in the final paragraph？
A．New levels of qualification are being developed for it.
B．It is now being perceived as key to increased profitability.
C．Higher numbers of managers are being attracted to it.
D．It is becoming central to a business's survival. PART FOUR
第4题
Question 47
You work in the Market Survey institute. After careful research ,you receive four charts.
Read the following charts which show , the trend of consumer confidence, real hourly wages, employment and credit development. The years are given ,while the other numbers are not presented. But the lines in the charts clearly show , the directions of development.
Use the information in the charts to write a report (about 100- 120 words) analyzing the reason why the consumer confidence increases.
Write on your Answer Sheet.
第5题
听力原文： Due to the emergency blackout at the airport in New Jersey, our neighboring airport, all of their flights have been distributed between the four neighboring airports to the north, south, east, and west. Due to this unforeseen event, a great number of flights have been redirected to our airport. Therefore, current flight schedules will have to be readjusted to accommodate our neighbor in distress. Affected flight numbers 71, 72, and 73 boarding for Los Angeles, Seattle, and Anchorage, respectively, will be delayed an hour, and flight numbers 45, 46, and 47 departing to Vancouver, New Mexico, and Houston, respectively, will be departing 10 minutes before schedule. Therefore, those passengers scheduled to depart on flights number 45, 46, and 47 should start boarding immediately.
What has caused the schedule mix up？
A．The weather conditions.
B．A security alert.
C．An electricity problem.
D．Construction.
第6题
根据下列文章,请回答 31～35 题。
Text 3
Karen Rusa was a 30-year-old woman and the mother of four children. For the past several months Karen had been experiencing repetitive thoughts that centered around her children' s safety.She frequently found herself imagining that a serious accident had occurred; she was unable to put these thoughts out of her mind. On one such occasion she imagined that her son, Alan, had broken his leg playing football at school. There was no reason to believe that an accident had occurred, but she kept thinking about the possibility until she finally called the school to see if Alan was all right. Even after receiving their assurance that he had not been hurt, she described herself as being somewhat surprised when he later arrived home unharmed. Karen also noted that her daily routine was seriously hampered by an extensive series of counting work that she performed throughout each day. Specific numbers had come to have a special meaning to her; she found that her preoccupation with these numbers was hampering her ability to perform. everyday activities. One example was grocery shopping. Karen believed that if she selected the first item on the shelf, something terrible would happen to her oldest child. If she selected the second item, some unknown disaster would fall on her second child, and so on for the four children. Karen' s preoccupation with numbers extended to other activities, most notable the pattern in which she smoked cigarettes and drank coffee. If she had one cigarette ; she believed that she had to smoke at least four in a row, or one of her children would be harmed in some way. If she drank one cup of coffee, she felt compelled to drink four Karen acknowledged the unreasonableness of these rules, but, nevertheless, maintained that she felt more comfortable. When she observed them earnestly, when she was occasionally in too great a hurry to observe these rules, she experienced considerable anxiety, in the form. of a subjective feeling of dread and fear. She described herself as tense, uneasy, and unable to relax during these periods. The occurrence of rarely minor accidents does not reduce her belief that she had been directly responsible because of her inability to observe the rules about number.
第 31 题 The main idea of this passage is to_____
A．describe a woman who suffered from a psychological disease.
B．warn the readers against any imagination.
C．explain the reason why Karen had such fanciful thoughts.
D．present a case for the readers to study.
第7题
The main idea of this passage is to
A．describe a woman who suffered from a psychological disease.
B．warn the readers against any imagination.
C．explain the reason why Karen had such fanciful thoughts.
D．present a case for the readers to study.
第8题
Circulation at the top 10 newspapers
Average paid weekday circulation of the 10 largest U.S. newspapers for the 6 months ended June 30 and percentage change from the same period a year ago:
From: Kenneth Behan, Managing Editor, Kelbyville Dispatch
To: Editorial and reporting staff
Date: April 8, 20-
Re: Circulation numbers
Attachments: circulation.doc
All,
I've sent you this clipping from the USA Daily on newspaper circulation to make a point. We have been feeling pressure from above to increase circulation. But this year's numbers are up two percent compared to last year's! That is magnificent when you consider that firstly, our population base here in the Kelbyville area has actually shrunk by four percent in the last year; and secondly, almost none of the major newspapers in the nation are doing as well as we are. So I want to say congratulations to everybody. You are doing terrific, terrific work and I am well aware of it.
Keep it up.
What does the table show？
A．The percent change in circulation from a year earlier.
B．The percentage of market share each newspaper controls.
C．The annual revenue generated by weekday newspaper sales.
D．The total number of newspapers sold over the past 6 months.
第9题
听力原文： In many American universities the total work for a degree consists of thirty-six courses, each lasting for one semester. A typical course consists of three classes per week for fifteen weeks; while attending a university a student will probably attend four or five courses during each semester. Normally a student would expect to take four years attending two semesters each year. It is possible to spread the period of work for the degree over a longer period. It is also possible for a student to move between one university and another during his degree course, though this is not in fact done as a regular practice.
For every course that he follows a student is given a grade, which is recorded, and the record is available for die student to show to prospective employers. All this imposes a constant pressure and strain of work, but in spite of this some students still find time for great activity in student affairs. Elections to positions in student organizations arouse much enthusiasm. The effective work of maintaining discipline is usually performed by students who advise the academic authorities. With the enormous numbers of students, the operation of the system does involve a certain amount of activity. A student who tins held one of these positions of authority is much respected and it will be of benefit to him later in his career.
(33)
A．To live in a different university.
B．To take a particular course in a different university.
C．To live at home and drive to classes.
D．To get two degrees from two different universities.
第10题
【C9】______objective tests the student has just one【C10】______: he must recognize the correct answer and【C11】______its letter or number on his examination paper.【C12】______there is an answer【C13】______on which the four letters or numbers are【C14】______. Then the student has only to circle the one that【C15】______with the correct answer.
【C16】______testing a student's【C17】______of facts and details, the objective test has advantages. It can be【C18】______very quickly by the teacher or even by a【C19】______. In a short time the teacher can find out a great deal about the student's【C20】______of knowledge.
【C1】
A．method
B．kind
C．sort
D．type
