The word “salary” used to mean “a sum of money given to Roman soldiers to enable them
A.extension
B.restriction
C.degeneration
D.elevation
A.extension
B.restriction
C.degeneration
D.elevation
There is “u” and “s” in the word “us”.
A.a…a
B.a…an
C.an…a
D.an…an
The author of the passage advises us to do all the following EXCEPT______.
A. we should think before, while and after we read a passage
B. we'd better look up every new word in a dictionary
C. we should learn to guess the meanings of new words
D. the clues in a passage should be made use of
What is the main idea of this passage?
A.The telephone has helped to save people from illness and fire.
B.The telephone has helped to prevent wars and conflicts.
C.The telephone has made the modern city neither better nor worse.
D.The telephone has had positive as well as negative effects on us.
People in the US can now carry an artificial intelligence (AI) around in their pocket, where it waits patiently to be told what to do.
Siri, an iPhone application that understands spoken commands and uses the web to carry them out,is a byproduct from a US military project to develop an artificially intelligent assistant.
Many people's experience of a "virtual assistant" may be limited to Microsoft's annoying classic Mr. Clippy. But in the week we spent together, my AI assistant has performed admirably in finding me restaurants, or the location of the nearest coffee shop. It wasn't even stumped when I asked "do I need my umbrella today?" coming straight back with the local weather forecast.
A typical command might be: "Reserve a table for two at a good French restaurant in San Francisco." Siri responds by presenting a list of top-rated restaurants that can be booked on OpenTable.com. If you say which time you want, it can book you a table without your lifting a finger.
In some ways Siri is just a fancy front-end to the 35 sites it can connect to, from taxi booking sites to movie review databases. But what's new is the way it can interpret the intentions of its master or mistress and use those sites to put them into action.
Doing that requires the ability to actually understand the meaning of words you use, not just passing on keywords blindly, says Siri co-founder Adam Cheyer.
"Book a four-star restaurant in Boston seems pretty straightforward," says Cheyer, "until you realise that Book is a city in the US, and Star is also a city in the US, and there are 13 Bostons, and Star is also the name of a restaurant."
To cut through what Cheyer calls the "combined explosion of interpretations", Siri uses your location, and the history of the commands you've given. It knows that "book" is most likely a command verb, unless you happen to be near the city of Book.
Siri attaches probabilities to the interpretation of each word and cross-reference(参照) with your location and other data, some of which you must provide yourself.
According to the passage, Siri is most probably ______.
A.still at its experimental stage
B.very popular with iPhone users
C.a US military assistant software
D.an artificial intelligence software
For many of us summer is a special time for forming new friendships. Today millions of Americans vacation abroad, and they go not only to see new sights but also with the hope of meeting new people. No one really expects a vacation trip to produce a close friend, but the beginning of a friendship is possible.
The word "friend" can be applied to a wide range of relationships—to someone one has known for a few weeks in a new place, to a fellow worker, to a childhood playmate, to a man or woman, to a trusted confidant (知己) .
The reasons why many Americans move from place to place are as follows except______.
A.saving money
B.getting a better job
C.going to college
D.finding a place to spend the rest of the life
A.select deptno, max(salary) from emp group by deptn
B.select job, max(salary) from emp group by job having max(salary)>10000
C.select job, max(salary) from emp order by job
D.select job, max(salary) from emp group by salary having max(salary)>10000
"If your computer is down, just write me out a ticket."
"I can't write you out a ticket. The computer is the only one allowed to do so."
I looked down on the computer and every passenger was just standing there staring at the black screen. Then I asked her, "What do all you people do?'
"We give the computer the information about your trip, and then it tells us whether you can fly with us or not."
"So when it goes down, you go down with it."
"That's good, sir. '
"How long will the computer be down?" I wanted to know.
"I have no idea. There's no way we can find out without asking the computer."
After the girl told me they had no backup (备用) computer, I said. "Let's forget the computer. What about your planes? They're still flying, aren't they?"
"I wouldn't know," she said, pointing at the dark screen. "Only 'IT'knows. 'It'can't tell me.
By this time there were quite a few people standing in lines. The word soon spread to other travelers that the computer was down. Some people started to cry and still others kicked their luggage.
The best title for the article is______.
A.When the Computer Is Down
B.How to buy a ticket
C.The Computer of the Airport
D.Asking the Computer
As you know, the turning of the earth makes the sun and the stars seem to move across the sky. Daylight, of course,【21】, when the sun rises in the east and when the sun is high【22】the sky, between these two positions, half of the daylight hours have been spent.
Therefore, by noticing【23】the sun stood in the sky, early man know they could tell the time of the day, At night the motion of the stars【24】the same purpose. The important thing in keeping time is to know the exact moment of【25】. For each of us, wherever we are, noon is when the sun is directly overhead. Think of an imaginary line【26】the sky, stretching from the north point of your horizon just to the south point.
When the sun cross your meridian (子午线), it is noon for you. When the sun still【27】of this line, or the meridian, it is morning. After the sun has crossed this line, it is【28】.
The Latin word for "midday" is "deridian",【29】which comes our word meridian. So AM is an abbreviation (缩写词) for "ante meridean", or before midday, and PM for after midday. Each or the world's time zones (时区) is about fifteen degrees wide in longitude (经度), which is about the distance the sun moves through tile sky in all hour.【30】lives in the same time zone observes noon at the same moment. In this way, the time is different by one hour as you move through each time zone.
(61)
A.comes
B.begins
C.appears
D.shines
A.select*fromemployeeswheresalary>(selectmin(salary)fromemployeesgroupbydepartment.id)
B.select*fromemployeeswheresalary=(selectavg(salary)fromemployeesgroupbydepartment_id)
C.selectdepartment_idfromemployeeswheresalary>all(selectavg(salary)fromemployeesgroupbydepartment_id)
D.selectlast_namefromemployeeswheresalary>any(selectmax(salary)fromemployeesgroupbydepartment_id)