填空题One word that you might have learned when you were studying about sound is frequency. Frequency means
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fast the sound wave vibrates. Faster vibrations produce
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pitched sounds. The notes in a musical scale indicate the
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or frequency of the sound.
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word that can describe a sound is intensity. Intensity
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to the amount of energy in a sound wave, and it
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a sound"s loudness. Printed music will often include notes about how loud or
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to play each section of the music. Timbre is another
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used to describe musical sounds. It describes how the same note will have
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sounds when played
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different instruments. For example the same note may sound soft and pretty when played on a flute,
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strong and brassy when played on a trumpet. The timbre of a note comes from both the actual note
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is played
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also its overtones,
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are other higher and lower sounds that are produced
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the same time.
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填空题There (is) much in our life (which) we do not control (and we are) not even responsible (for).
A. is B. which C. and we are D. for
填空题No one (care about) if he (appears) at the meeting next year or not. If (it happens) he will (be made to) apologize for his careless comments.
A. care about B. appears C. it happens D. be made
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填空题A. The new Minneapolis bridge joins a handful of "smart" bridges that have built-in sensors to monitor their health. B. The kilometers of wire needed to connect sensors to central computers can add significantly to the system's cost, according to Jerome Lynch of the University of Michigan, Ann Arbor. C. By 2025 all bridges in America will have been equipped with this advanced technology. D. A continuous skin would solve this problem. E. In the wake of the catastrophe, there were calls to harness technology to avoid similar mishaps. F. Engineers then installed additional weights as dampeners. When an eight-lane steel-truss-arch bridge across the Mississippi River in Minneapolis collapsed during the evening rush hour on August 1st 2007, 13 people were killed and 145 were injured. There had been no warning. The bridge was 40 years old but had a life expectancy of 50 years. The central span suddenly gave way after the gusset plates that connected the steel beams buckled and fractured, dropping the bridge into the river. (71) The St. Anthony Falls bridge, which opened on September 18th, 2008 and replaces the collapsed structure, should do just that. It has an embedded early-warning system made of hundreds of sensors. They include wire and fibre-optic strain and displacement gauges, accelerometers, potentiometers and corrosion sensors that have been built into the span to monitor it for structural weaknesses, such as corroded concrete and overly strained joints. (72) Another example is the six-lane Charilaos Trikoupis bridge in Greece, which spans the Gulf of Corinth, linking the town of Rio on the Peloponnese peninsula to Antirrio on the mainland. This 3km-long bridge, which was opened in 2004, has roughly 300 sensors that alert its operators if an earthquake or high winds warrant it being shut to traffic, as well as monitoring its overall health. These sensors have already detected some abnormal vibrations in the cables holding the bridge. (73) The next generation of sensors to monitor bridge health will be even more sophisticated. For one thing, they will be wireless, which will make installing them a lot cheaper. (74) Dr Lynch is the chief researcher on a project intended to help design the next generation of monitoring systems for bridges. He and his colleagues are also looking at how to make a cement-based sensing skin that can detect excessive strain in bridges. Individual sensors, says Dr Lynch, are not ideal because the initial cracks in a bridge may not occur at the point the sensor is placed. (75) He is also exploring a paint-like substance made of carbon nanotubes that can be painted onto bridges to detect corrosion and cracks. Since carbon nanotubes conduct electricity, sending a current through the paint would help engineers to detect structural weakness through changes in the paint's electrical properties.
填空题What is the result of the "new form of discrimination" (Line 5, Para 4)?
填空题What is kinesics?
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填空题"Humanism" has used to mean too many things to be a very satisfactory term. 57. Nevertheless, and in the lack of a better word, 58. I shall use it here to explain for the complex of attitudes which this discussion has undertaken to defend. 59. In this sense a humanist is anyone who rejects the attempt to describe or account of man wholly on the basis of physics, chemistry, and animal behavior. 60. He is anyone who believes that will, reason, and purpose are real and significant: that value and justice, are aspects of a reality called good and evil and rests upon some foundation other than custom; 61. that consciousness is so far from a mere epiphenomenon that it is the most tremendous of actualities; 62. that the unmeasured may be significant; or, to sum it all up, 63. that those human realities which sometimes seem to exist only in human mind are the perceptions of the mind. 64. He is, in other words, anyone who says that there are more things in heaven and earth than those dreamed of in the positivist philosophy. 65. Originally, to the sure, the term humanist meant simply anyone who thought the study of ancient literature his chief concern. Obviously it means, as I use it, very much more. 66. But there remains nevertheless a certain connection between the aboriginal meaning and that I am attempting to give it. 67. Because those whom I describe as humanists usually recognize that literature and the arts have been pretty consistently "on its side" and 68. because it is often to literature that they turn to renew their faith in the whole class of truths which the modem world has so consistently tended to dismiss as the mere figments of a wishful thinking imagination. 69. Insofar as this modern world gives less and less attention to its literary past, insofar as it dismisses that as something outgrow and 70. to be discarded as much as the imperfect technology contemporary with it has been discarded, 71. just to that extent it facilitate the surrender of humanism to technology. 72. The literature is to be found, directly expressed or, 73. more often, indirectly implied the most effective correction to the views now most prevalent among the thinking and unthinking. 74. The great imaginative writers present a picture of human nature and of human life which carries conviction and thus giving the lie to all attempts to reduce man to a mechanism. Novels and poems, and dramas are so persistently concerned with the values which relativism rejects that one might even define literature as the attempt to pass value judgments upon representations of human life. 75. More often than not those of its imaginative persons who fail to achieve power and wealth are more successful than those who do not--by standards which the imaginative writer persuades us to accept as valid.
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填空题The economic situation will improve given that there is forecast to be less unemployment and closures than in previous years.A.will improveB.forecast to beC.closuresD.previous years
填空题{{B}}Directions:{{/B}} For each numbered blank in the following passage, fill in
a suitable word in each blank on the ANSWER SHEET.
In the United States and in many {{U}}(51) {{/U}}
countries around the world, there are four main ways for people to be informed
{{U}}(52) {{/U}} developments in the news: Newspapers, magazines, and
{{U}}(53) {{/U}} or television news broadcasts. A person may use one, or
all, of these {{U}}(54) {{/U}} for information. Each source is
useful in its own way. Newspapers and magazines can give much
{{U}}(55) {{/U}} about a particular event. They may provide some history
of the event, some of its causes, some of its effects, or perhaps give an
opinion or point of view on a particular development. Radio and television can
help a person to be well-informed about what is {{U}}(56) {{/U}} each
day. It is also possible to listen to the radio or {{U}}(57) {{/U}} TV
and do something {{U}}(58) {{/U}} at the same time. Many people can
listen to the news {{U}}(59) {{/U}} their car radio while {{U}}(60)
{{/U}} somewhere. For the student of English {{U}}(61) {{/U}} a
foreign language, an English language newspaper may be the most helpful news
source {{U}}(62) {{/U}} will also give you practice in reading
English. Most daily English language newspapers are not very
hard to read. They are interesting and helpful in many ways. In some of them,
you may be able to find news about your native country. You will find news, and
information about important national and international political developments.
No matter what you are interested in, you can probably find something in the
newspaper about it. A story in the newspaper may help you {{U}}(63)
{{/U}} a problem. Other stories may be about good movies, concerts, or TV
shows. Usually, an English language newspaper has several
sections or parts. Each part of the newspaper {{U}}(64) {{/U}} stories
about different kinds of news. Some sections have a lot of advertisements which
may be helpful if you want to save money. By reading the {{U}}(65)
{{/U}}, you may find something you want on sale. Or you may find that two
stores are advertising the same thing, but at one store the {{U}}(66)
{{/U}} is lower. Other sections may have fewer advertisements or have only a
specific type of advertisement to interest the people who read that section of
the paper. The first section of the paper usually has the most
important {{U}}(67) {{/U}} in it. Important {{U}}(68) {{/U}} in
national and international government and politics will be mentioned in the
first section, and usually {{U}}(69) {{/U}} the first page. Other news
that is important to the people {{U}}(70) {{/U}} read the paper
will also be in the first section. For example, The New York Times usually has
stories about national and international news on the first page. There and on
the other pages of the first section, the Times also has news about New York
City and other nearby areas. This local news is important to many people who
read The New York Times.
