Messages be changed from sound into electricity before they be sent by radio. A. must; will B. have to; can C. can; must D. need; may 题目和参考答案——青夏教育精英家教网—

题目内容

Messages ______ be changed from sound into electricity before they ______ be sent by radio.

A. must; will B. have to; can C. can; must D. need; may

【答案】

本句意思是“信息得从声音转化成电子信号才能被送出去”。must和have to都可以翻译成“必须”，往往可以互用，但must表示的是说话人的主观看法，而have to则强调客观需要，如：The film is not interesting. I really must go now.

I had to work when I was your age.

本题很明显是强调客观需要。

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【小题1】People communicate ________.

A．with words only	B．in many different ways
C．in letters and drawings	D．with smiles, tears and hands

【小题2】Signs can carry as many _________ as words.

【小题3】Which of the following is not talked in the passage as which can help us communicate?

A．books and magazines

B．TV and films

C．newspapers　

D．radio

【小题4】Communication is important because it can help people to ______.

A．understand the world and other people better around us.

B．teach each other to speak, write, read and draw.

C．know what other people are thinking about

D．learn about mountains,blue sea and other things.

【小题5】The best title（题目）for this short passage is _________.

A．Signs Carry Messages	B．The important Communication
C．Words, Signs and Drawing	D．Ways of Communication.

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“The ability to deliver accurate and timely warnings.and alerts through cell phones and other mobile services is an important next step in our efforts to help ensure that the American public.has the information they need to take action to protect themselves and their families before, and during,disasters and other emergencies. ”FCC Chairman Kevin Martin said following approval of the plan.
Participation in the alert system by carriers—telecommunications companies is voluntary, but it has received solid support from the wireless industry.
The program would be optional for cell phone users. They also may not be charged for receiving alerts.
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The first would be a national alert from the president，likely involving a terrorist attack or natural disaster.The second would involve “approaching threats，”which could include natural disasters like hurricanes or storms or even university shootings. The third would be reserved for child abduction（绑架）emergencies,or so-called Amber Alerts.
The service could be in place by 2010.
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A．To warn people of emergencies via messages.

B．To popularize the use of cell phones.

C．To estimate the monthly number of messages.

D．To promote the wireless industry.

【小题2】 The improvement to the present system is in the charge of ________.

A．CTIA	B．the Warning Alert and Response Network
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【小题3】 The carriers' participation in the system is determined by ________.

A．the US federal government	B．mobile phone users
C．the carriers themselves	D．the law of the United States

【小题4】. Which of the following is true of cell phone users?

A．They must accept the alert service.

B．They may enjoy the alert service for free.

C．They must send the alerts to others

D．They may choose the types of messages

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B. Cell Phone Alerts by Wireless Industry
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In the kitchen of my mother's houses there has always been a wooden stand with a small notepad and a hole for a pencil.

I'm looking for paper on which to note down the name of a book I am recommending to my mother. Over forty years since my earliest memories of the kitchen pad and pencil, five houses later, the current paper and pencil look the same as they always did. Surely it can't be the same pencil. The pad is more modern, but the wooden stand is definitely the original one.

"I'm just amazed you still have the same stand for holding the pad and pencil after all these years." I say to her, walking back into the living-room with a sheet of paper and the pencil. "You still use a pencil. Can't you afford a pen?"

My mother replies a little sharply. "It works perfectly well; I've always kept the stand in the kitchen. I never knew when I might want to note down an idea, and I was always in the kitchen in these days. "

Immediately I can picture her, hair wild, blue housecoat covered in flour, a wooden spoon in one hand, the pencil in the other, her mouth moving silently. My mother smiles and says, "One day I was cooking and watching baby Pauline, and I had a brilliant thought, but the stand was empty. One of the children must have taken the paper. So I just picked up the breadboard and wrote it all down on the back. It turned out to be a real breakthrough for solving the mathematical problem I was working on."

This story, which happened before I was born, reminds me how extraordinary my mother was, and is also a gifted mathematician. I feel embarrassed that I complain about not having enough child-free time to work. Later, when my mother is in the bathroom, I go into her kitchen and turn over the breadboards. Sure enough, on the back of the smallest one, are some penciled marks I recognize as mathematics. Those symbols have traveled unaffected through fifty years, rooted in the soil of a cheap wooden breadboard, invisible exhibits at every meal.

1.Why has the author's mother always kept the notepad and pencil in the kitchen?

A．To leave messages.

B．To list her everyday tasks.

C．To note down math problems.

D．To write down a flash of inspiration.

2.What is the author's original opinion about the wooden stand?

A．It has great value for the family.

B．It needs to be replaced.

C．It brings her back to her lonely childhood.

D．It should be passed on to the next generation.

3.The author feels embarrassed for____________.

A．blaming her mother wrongly

B．giving her mother a lot of trouble

C．not making good use of time as her mother did

D．not making any breakthrough in her field

4.What can be inferred from the last paragraph?

A．The mother is successful in her career.

B．The family members like traveling.

C．The author had little time to play when young.

D．The marks on the breadboard have disappeared.

Communications technologies are far from equal when it comes to conveying the truth. A recent research shows people tend to tell more lies in phone conversations than they are in emails. The fact that emails are automatically recorded and can come back to haunt you appears to be the key to the finding.

Jeff Hancock of Cornell University in Ithaca, New York, asked 30 students to keep a communications diary for a week. In it they noted the number of conversations or email exchanges they had lasting more than 10 minutes, and confessed to how many lies they told. Hancock then worked out the number of lies per conversation for each medium. He found that lies made up 14 percent of emails, 21 percent of instant messages, 27 percent of face-to-face interactions and an astonishing 37 of phone calls.

His results to be presented at the conference on human-computer interaction in Vienna, Austria, in April, have surprised psychologists. Some expected emailers to be the biggest liars, reasoning that because deception makes people uncomfortable, the detachment（非直接接触）of emailing would make it easier to lie. Others expected people to be more in face-to-face exchanges because we are most practiced at that form of communication.

But Hancock says it is also crucial whether a conversation is being recorded and could be reread, and whether it occurs in real time. “People appear to be afraid to lie when they know the communication could later be used to hold them to account,” he says. This is why fewer lies appear in email than on the phone.

“People are also more likely to lie in real time in an instant message or phone call than if they have time to think of a response,” say Hancock. He found many lies are spontaneous responses to an unexpected demand, such as, “Do you like my dress?”

Hancock hopes his research will help companies work out the best ways for their employees to communicate. For instance, the phone might be the best medium for sales where employees are encouraged to stretch the truth. But, given his result, work assessment where honesty is a priority, might be best done using email.

1.Hancock’s study focuses on ______.

A. the consequences of lying in various communications media

B. the success of communications technologies in conveying ideas

C. people are less likely to lie in instant messages

D. people’s honesty levels across a range of communications media

2.Hancock’s research finding surprised those who believed that ______.

A. people are less likely to lie in instant messages

B. people are unlikely to lie in face-to-face interactions

C. people are most likely to lie in email communication

D. people are twice as likely to lie in phone conversations

3.According to the passage, why are people more likely to tell the truth through certain media of communication?

A. They are afraid of leaving behind traces of their lies.

B. They believe that honesty is the best policy.

C. They tend to be relaxed when using those media.

D. They are most practiced at those forms of communication.

4.It can be inferred from the passage that ______.

A. honesty should be encouraged in interpersonal communications

B. more employers will use emails to communicate with their employees

C. suitable media should be chosen for different communication purposes

D. email is now the dominant medium of communication within a company

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