网友您好， 请在下方输入框内输入要搜索的题目：
题目内容
（请给出正确答案）
The first IC’s were made____the early 1960’s.
A.in
B.from
C.for
D.of
B.from
C.for
D.of
参考答案
参考解析
解析：本题考查介词。题目意为：“第一块集成电路诞生于二十世纪六十年代初期。”
固定搭配in the early 1960’s 二十世纪六十年代初期，指1960到1970年间某时间点。
固定搭配in the early 1960’s 二十世纪六十年代初期，指1960到1970年间某时间点。
更多 “The first IC’s were made____the early 1960’s. A.in B.from C.for D.of” 相关考题
考题
●The OSI (68) model，sometimes also called ISO or 7 layers reference model for communication.has been developed by the International Standards Organization in early 1980's.(68) A．referentB．referenceC．referanceD．refering
考题
In the 1950s and 1960s in an Irish family there were 2 or 3 children on average.()
此题为判断题(对，错)。
考题
________ was the first American writer to conceive his career in international terms.
A.Washing IrvingB.Henry JamesC.Ezra PoundD.T. S. Eliot
考题
用SQL语言检索选修课程在5门以上（含5门）的学生的学号、姓名和平均成绩，并按平均成绩降序排序，正确的命令是（ ）。A．SELECT S.学号,姓名,平均成绩 FROM S,SC;WHERE S.学号=SC．学号;GROUP BY S.学号 HAVING COUNT（*）=5 ORDER BY 平均成绩 DESCB．SELECT 学号,姓名,AVG（成绩） FROM S,SC;WHERE S.学号=SC．学号AND COUNT（*）=5;GROUP BY 学号 ORDER BY 3 DESCC．SELECT S.学号,姓名,AVG（成绩） 平均成绩 FROM S,SC;WHERE S.学号=SC．学号AND COUNT（*）=5;GROUP BY S.学号 ORDER BY 平均成绩 DESCD．SELECT S.学号,姓名,AVG（成绩） 平均成绩 FROM S,SC;WHERE S.学号=SC．学号;GROUP BY S.学号 HAVING COUNT（*）=5 ORDER BY 3 DESC
考题
用SQL语言检索选修课程在5门以上（含5门）的学生的学号、姓名和平均成绩，并按平均成绩降序排序，正确的命令是A）SELECT S.学号，姓名，平均成绩FROM S,SC; WHERE S.学号=SC.学号； GROUP BY S．学号HAVING GOUNT（*）=5 ORDER BY平均成绩DESCB）SELECT学号，姓名,AVG（成绩）FROM S,SC; WHERE S．学号SC.学号AND COUNT（*）＞＝5； GROUP BY学号ORDER BY 3 DESCC）SELECT S.学号，姓名，AVG（成绩）平均成绩FROM S,SC; WHERE S.学号=SC.学号AND COUNT(*)=5; GROUP BY S．学号ORDER BY平均成绩DESCD）SELECT S.学号，姓名，AVG(成绩）平均成绩FROM S,SC; WHERE S.学号=SC.学号； GROUP BY S．学号HAVING COUNT（*）=5 ORDER BY 3 DESC
考题
Tom’s parents were very ( ) of him because he won the first ( )in the competition.
A、proud/ prizeB、proud/ priceC、pride/ prizeD、pride/ price
考题
how many children were there in an irish family on average in the 1950s and 1960s?A. Around 5.B. More than 8.C. One.D. 2 or 3.
考题
查询选修课程在5门以上(含5门)的学生的学号、姓名和平均成绩，并按平均成绩降序排序，正确的命令是A．SELECT s．学号，姓名，平均成绩FROM student s，score sc WHERE s．学号=sc．学号 GROUP BY s．学号HAVING COUNT(*)=5 ORDER BY平均成绩DESCB．SELECT学号，姓名，AVG(成绩)FROM student s，score sc WHERE s．学号=sc．学号AND COUNT(*)=5 GR0UP BY学号ORDER BY 3 DESCC．SELECT s．学号，姓名，AVG(成绩)平均成绩FROM student s，score sc wHERE s．学号=sc．学号AND COUNT(*)=5 GROUP BY s．学号ORDER BY平均成绩DESCD．SELECT s．学号，姓名，AVG(成绩)平均成绩FROM student s，score sc WHERE s．学号=sc．学号 GROUP BY s．学号HAVING COUNT(*)=5ORDER BY 3 DESC
考题
查询选修课程在5门以上(含5门)的学生的学号、姓名和平均成绩，并按平均成绩降序排序，正确的命令是（ ）。A.SELECT S．学号，姓名，平均成绩FROM student s，score sc WHERE S．学号=sc．学号 GROUP BY s．学号HAVING COUNT(*)=5 ORDER BY平均成绩DESCB.SELECT s．学号，姓名，AVG(成绩)FROM student s，score sc WHERE s．学号=SC．学号AND COUNT(*)=5 GRoUP BY学号0RDER BY 3 DESCC.SELECT S．学号，姓名，AVG(成绩)平均成绩FROM student s，score sc WHERE s．学号=SC．学号AND COUNT(*)=5 GROUP BY s．学号ORDER BY平均成绩DESCD.SELECT s．学号，姓名，AVG(成绩)平均成绩FROM student s，score sc WHERE s．学号=sc．学号 GROUP BY s．学号HAVING COUNT(*)=5 0RDER BY 3 DESC
考题
The discount houses were first established in that period of time ________ people‘s purchasing power was low. A. which B. that C. when D. where
考题
给定关系模式R(A，B，C，D.、S(C，D，E.，与π1,3,5(σ2='软件工程'(R?S))等价的SQL语句如下：SELECT （ ） FROM，SWHERE （请作答此空） ；
下列查询B="信息"且E="北京"的A、B、E的关系代数表达式中，查询效率最高的是 （ ） 。A.B=软件工程ORR. C=S. CAND.R. D=S. D
B.B='软件工程'ORR. C=S. CANDR. D=S. D
C.B='软件工程'ORR. C=S. CORR. D=S. D
D.B='软件工程'AND.R. C=S. C.AND.R. D=S. D
考题
It seems so natural to put up an umbrella to keep the water off when it rains.But actually the?umbrella was not invented as protection against rain.Its first use was as a shade against the sun!
Nobody knows who first invented it,but the umbrella was used in very ancient times.Probably?the first to use it were the Chinese,as early as the eleventh century B.C.
We know that the umbrella was used in ancient Egypt and Babylon as a sunshade.And there?was a strange thing connected with its use:it became a symbol of honour and authority.In the Far?East in ancient times the umbrella was allowed to be used only by royalty or by those in high office.
In Europe,the Greeks were the first to use the umbrella as a sunshade.And the umbrella was?in common use in ancient Greece.But it is believed that the first persons in Europe to use the?umbrella as protection against the rain were the ancient Romans.
During the Middle Ages,the use of the umbrella practically disappeared.Then it appeared?again in Italy in the late sixteenth century.And again it was considered a symbol of power and authority.By 1680,the umbrella appeared in France,and later on in England.
By the eighteenth century,the umbrella was used against rain throughout most of Europe.Umbrellas have not changed much in style during all this time,though they have become much lighter in weight.It wasn′t until the twentieth century that women′s umbrellas began to be made,in a whole variety of colours.
A strange feature of the umbrella′s use is that it was used as__________.A.protection against rain
B.a shade against the sun
C.a symbol of honour and power
D.a way of women's decoration
考题
A.B=软件工程ORR. C=S. CA.ND R. D=S. D
B.B=‘软件工程’ORR. C=S. CA.NDR. D=S. D
C.B=‘软件工程’ORR. C=S. CORR. D=S. D
D.B=‘软件工程’A.ND R. C=S. C A.ND R. D=S. D
考题
给定关系模式R(A，B，C，D）、S(C，D，E），与π1,3,5(σ2=‘软件工程’(R?S))等价的SQL语句如下：SELECT（ ）FROM S WHERE（请作答此空）；下列查询B=“信息”且E=“北京”的A、B、E的关系代数表达式中，查询效率最高的是（ ）。
A. B=软件工程OR R. C=S. C AND R. D=S. D
B. B=‘软件工程’OR R. C=S. C AND R. D=S. D
C. B=‘软件工程’OR R. C=S. C OR R. D=S. D
D. B=‘软件工程’AND R. C=S. C AND R. D=S. D
考题
单选题The population of peregrine falcons declined rapidly during the 1950’s and 1960’s and reached an all-time low in the early 1970’s. The decline was attributed by scientists to the widespread use of the pesticide DDT in rural areas. Which of the following, if true, gives the strongest support to the scientists’ claim?A
DDT was not generally in use in areas devoted to heavy industry.B
In the time since the use of DDT was banned in 1972, the population of peregrine falcons has been steadily increasing.C
Peregrine falcons, like other birds of prey, abandon eggs that have fallen out of the nest, even if the eggs remain intact.D
Starlings, house sparrows, and blue jays-birds the peregrine falcon preys on were not adversely affected by DDT in their habitats.E
Other birds of prey, such as the osprey, the bald eagle, and the brown pelican, are found in the same areas as is the peregrine falcon.
考题
单选题According to Hudson Institute researchers, the effect of the early retirement of qualified workers in the U. S. economy is ______.A
constructiveB
significantC
inconclusiveD
detrimental
考题
单选题According to the passage, cell phones were launched _____.A
in the late 1970sB
between 1980 and 1985C
in the late 1980sD
in the early 1990s
考题
单选题The Arabic legend is used to prove that _____.A
coffee was first discovered by KaldiB
coffee was first discovered by Kaldi’s goatsC
coffee was first discovered in South American countriesD
coffee drinks were first made by Arabs
考题
单选题Early fitness spas were intended mainly for _____.A
the promotion of aerobic exerciseB
endurance and muscular developmentC
the improvement of women’s figuresD
better performance in aerobic dancing
考题
单选题One of the main goals of the modern woman’s liberation movement, which started in the early 1960s, was to _____ sex discrimination in the workforce, and to open up careers for women that were previously reserved for men.A
abolishB
eliminateC
diminishD
extinguish
考题
单选题Why does the author call lichens pioneers?A
Because they developed so early in the history of the planet.B
Because of their primitive structure.C
Because they prepare soil for other plants.D
Because they were the first plants to live in Antarctica.
考题
单选题学生表：S（学号，姓名，性别）和选课成绩表：SC（学号，课程号，成绩），用SQL语言检索选修课程在5门以上（含5门）的学生的学号、姓名和平均成绩，并按平均成绩降序排序，正确的命令是（ ）。A
SELECT S.学号，姓名，AVG（成绩）平均成绩 FROM S，SC；WHERE S.学号=SC.学号；GROUP BY S.学号，姓名 HAVING COUNT（*）=5 ORDER BY 3 DESCB
SELECT S.学号，姓名，AVG（成绩） FROM S，SC；WHERE S.学号=SC.学号 AND COUNT（*）=5；GROUP BY 学号，姓名 ORDER BY 3 DESCC
SELECT S.学号，姓名，AVG（成绩） 平均成绩 FROM S，SC；WHERE S.学号=SC.学号 AND COUNT（*）=5；GROUP BY S.学号，姓名 ORDER BY 平均成绩 DESCD
SELECT S.学号，姓名，平均成绩 FROM S，SC；WHERE S.学号=SC.学号；GROUP BY S.学号，姓名 HAVING COUNT（*）=50RDER BY 平均成绩 DESC
考题
问答题In the early 1950s the researchers who produced the first clad glass optical fibers were not thinking of using them for communications. (1) H____, fiber optics was already a well-established commercial technology when the famous paper by Kao and Hockham, (2)____(claim) the use of low-loss optical fibers for communication, appeared in 1966. The first low-loss silica fiber was described in (3)____ which appeared in October of 1970. The date of this publication is sometimes (4)____(cite) as the beginning of the era of fiber communication. Although this development did receive (5)____(consider) attention in the research community at the time, it was far from inevitable that a major industry would evolve. The technological barriers appeared formidable because there were serious doubts as to (6) wh_____ these fiber components could ever be produced economically enough, but the market potential was very significant. (7)____(consequence), research and development activity expanded rapidly, and a number of important issues were (8) re_____ during the early 1970s. During the middle and late 1970s，the rate of progress towards marketable products accelerated as the emphasis (9)____(shift) from research to engineering. Fibers with losses (10) app____ the Rayleigh limit of 2 dB/km at a wavelength of 0.8μm were produced. By 1980 improvement in component performance, cost, and reliability led to major commitments on the part of telephone companies.
考题
问答题Practice 1 Twenty years ago, Motorola looked upon the Japanese with something close to fear. The Chicago company’s television-manufacturing division had been large and profitable in the 1960s. By the early 1970s, however, high costs and a rising tide of inexpensive Japanese TVs were taking a heavy toll. “The Japanese were very aggressive”, recalls Motorola spokesman Mario Salvadori. “They wanted to get market share.” With cutthroat pricing, they did—eventually running nearly every U.S. electronic company out of the TV business. Motorola sold its Quasar TV unit to a Japanese company in 1974. But while other U.S. companies were floored for foreign competition, Motorola refocused its energies, It turned to wireless communications—an industry it had pioneered (with mobile radios and walkie-talkie) in the 1920s. It was a prescient move.
考题
单选题Plastics of various kinds have been used for making bottles _____.A
since 1982B
since the 1970s but only for large bottlesC
since the 1960s but not for liquids with gas in themD
since companies like Coca Cola first tried them
考题
单选题Maybe it’s interesting to hear that ______ his books were so good. He gave public readings of his stories that were very popular. His stories first appeared in a magazine, in parts.A
whatB
howC
whenD
why
考题
单选题The writer used an Arabic story to prove that _____.A
coffee was first discovered by KaldiB
coffee was first discovered by Kaldi's goatsC
coffee was first discovered in South American countriesD
coffee drinks were first made by Arabs
热门标签
最新试卷
