题目内容
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Why does Denny have to go unarmed？
A．He cannot tell an enemy from a friend.
B．The price would be very high if it were armed.
C．He does not know how to use a weapon.
D．It is unlikely that he will be attacked by a human enemy.
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Denny
His nickname is Denny. He weighs 400 pounds; he is fearless and he never goes to sleep on the job. An ideal security guard？ For many situations he may be. And if he's so good that you wish you had a dozen like him, just place your order. Denny is a robot guard.
Denny can detect, within a 150-foot radius, the presence of anything or anybody that shouldn't be there. Its swiveling (旋转) head contains microwave and infrared sensors that can detect people as well as smoke. In future editions the head will also contain sensors that can smell the weak smell of a human body.
A high-resolution TV camera in Denny's head is on at all time. When something Unexpected comes into view; the TV transmitter switches on. Thus the human overseer (看管人) in the control center sees the sudden appearance of a picture on the monitor screen. At the same time the picture is automatically videotaped.
Normal speed of the robot guards is about one mile an hour, and. they can even talk: 'you have been detected,' warns the voice from the clever guard. Denny is designed to patrol corridors and other areas after lock-down hours (of course, he can work round the clock when necessary), not to move among people. If, say, a prisoner does get near the corridor where he should not be, it'll immediately tell its base station by radio.
Denny has understandable limitations. He can't open doors or watch stairs, for example, or distinguish friend from enemy. Thus he will have to go about unarmed. And he won't be able to replace human security guards where people move about freely.
Denny is a robot guard, who
A．has mechanical anus and legs.
B．has microwave and infrared sensors.
C．has a built-in computer.
D．depends on his built-in radio for distinguishing a friend from an enemy.
Why does the author think women usually have a poor self-concept of themselves？
A．because most of them work at home.
B．Because most of them have little schooling.
C．Because most of them are less competent than men.
D．Because their work is rarely praised.
A.If she had
B.Had she had
C.If she would have
D.Did she have
Why does the woman have to change the appointment？
A．She has another commitment.
B．She is too busy that day.
C．She changed the doctor.
D．She will be out of town that day.
Why does the man skip breakfast？
A．He's not hungry in the mornings.
B．He doesn't have time for it.
C．He thinks what nutrition experts say is rubbish.
Why does the woman think it is good that the test will be early？
A．They will have time to study for it.
B．Afternoons are bad times for tests.
C．After it, they can study for other exams.
D．They can start planning for their semester break.
Why does Harvey Coleman have these "Ridiculous belief"？
A．He is an ironical person.
B．He was mistreated by someone in authority.
C．He has the privilege of experiencing those procedures him self.
D．He is one of the minorities.
Why does the author mention a dog's bark？
A．It is a type of memory.
B．It is a type of interruption.
C．Dogs have better memories than humans.
D．A dog's bark is similar to a doorbell.
Why does the author speculate that Socrates' disciples may have resisted his lessons？
A．Because Socrates was ugly.
B．Because Socrates taught them to be critical.
C．Because they had a different expectation.
D．Because they were innocent.
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