There is a Log-log relation between the emitted optical output power and the dc current.

The difference between "gentleman-in-waiting" and "journeyman" is that

A．Education trained gentleman-in-waiting to climb higher ladders.

B．Journeyman was ready to take whatever was given to them.

C．Gentleman-in-waiting belonged to fixed and high social class.

D．Journeyman could do practically nothing without education.

Although the ratio of physicians to total population is about the same in the United States and Canada, the United States has 33 percent more surgeons per capita. Clearly, this is the reason people in the United States undergo 40 percent more operations per capita than do Canadians. The explanation given above rests on an assumption that

A．patients in the United States do not have a greater need for surgery than do patients in Canada.

B．the population of the United States is not larger than that of Canada.

C．United States patients sometimes travel to Canada for certain kinds of surgery.

D．general practitioners in the United States do not as a rule examine a patient who is a candidate for surgery before sending the patient to a surgeon.

E．there are no unnecessary surgical operations performed in Canada.

Which of the following statements, if true, would provide the strongest argument for a utility company spokesman wishing to refute the arguments expressed in the passage?

A．Over the last decade, the energy industry has funded an environmental initiative that has planted more than 200,000 new trees.

B．The dangers of acid rain to human health have been wildly exaggerated by environmental extremists who seek to scare the general public.

C．The specifications of the Clean Air Act, although well intentioned, in practice require power plants to adopt less efficient technologies that increase emissions of atmospheric pollutants other than sulfur dioxide that have been linked to equally serious

D．A substantial upgrade to a coal-burning power plant that includes the installation of sulfur dioxide scrubbing equipment can cost hundreds of millions of dollars, although companies can often recoup most of these costs over the following years as a result

E．The scientific data upon which the Clean Air Act was based have not been corroborated by the scientists at the Center for Atmospheric Truth, a research group funded by a consortium of energy companies.

Where do parents like to take their children to at Christmas?

A．The theatre and the circle.

B．The theatre and the museum.

C．The circle and the park.

Amazingly for the British, who love queues, there is no formal line-up—the bar staff is skilled at knowing whose turn it is. You are permitted to try to attract attention, but there are rules about how to do this. Do not call out tap coins on the counter, snap your finger or wave like a drowning swimmer. Do not frown or sigh or roll your eyes. And whatever you do, do not ring the bell hanging behind the counter—this is used by the landlord to signal closing time. ①The key thing is to catch the bar worker's eyes. You could also hold an empty glass or some money, but do not wave them about. Do adopt an expectant, hopeful, even slightly anxious facial expression. If you look too contented and pleasant, the bar staff may assume you are already being served.

Always say "please" and try to remember some of the British bar staffs pet hates. They do not like people to keep others waiting while they are making up their minds. They don't like people standing idly against the bar when there are a lot of customers wanting for service. And they do not like people who wait until the end of the order before asking for such drinks as Guinness stout which take considerably longer to pour than other drinks.②

One Dutch tourist who spent six months visiting 800 of Britain's 61,000 pubs and interviewing 50 bar bosses and workers and more than 1,000 customers said:“ I cannot understand how the British ever man- age to buy themselves a drink. ”③ But they do, and if you follow these tips you should be able to do so, too.

Speaking of tips, you should never offer the bar staff a cash tip. The correct behavior. is to offer them a drink~ Pubs pride themselves on their egalitarian atmosphere. A tip in cash would be a reminder of their service role, whereas the offer of a drink is a friendly gesture.

How can you attract bar waiter's attention in Britain?

A．Adopting an impatient expression.

B．Putting your coins on the counter.

C．Showing your empty glass in front of the bar staff.

D．Telling your expectation to the bar staff.

The Internet has opened up a whole new online world for us to meet, chat and go where we ‘ve never been before.

But just as in face to face communication, there are some rules of behavior. that should be followed when on line. 56_________ If someone in the chat room is rude to you, you Imagine how you ‘d feel if you were in the other person ‘s shoes. For anything you ‘re about to send: ask yourself, ―Would I say this to the person ‘s face?‖ If th answer is no, rewrite and reread. 57_________

If someone in the chat room is rude to you, your instinct ( 本能) is to fire back in the same manner. But try not to do so. 58 _________ If someone in the chat room is rude to you, youIf it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room.

59__________ If someone in the chat room is rude to you, you Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether it ‘s a stupid question or an unnecessarily long answer, b e kind about it. If it ‘s a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesn ‘t give you license to correct everyone else. 60_________ If someone in the chat room is rude to you, you At the same time, if you find you are wrong, be sure to correct yourself and apologize to those that you have offended. It is not polite to ask others personal questions such as their age, sex and marital status. Unless you know the person very well, and you are both comfortable with sharing personal information, don‘t ask such questions.

A. It ‘s natural that there some people who speak rudely or make mistakes online.

B. Repeat the process till you feel sure that you ‘d feel comfortable saying the words to the person‘s face.

C. Everyone was new to the network once.

D. The basic rule is simple: treat others in the same way you would want to be treated.

E. When you send short messages to a person online, you must say something beautiful to hear.

F. You should either ignore the person, or use your chat software to block their messages.

G. If you do decide to tell someone about a mistake, point it out politely.

56______

57______

58______

59______

60______

请帮忙给出每个问题的正确答案和分析，谢谢！

A．DO P1

B．DO P1 WITH I

C．DO P1 HAVE I

D．DO P1 OWN I

The Internet has opened up a whole new on-line world for us to meet, chat and go where we've never been before. But just as in face-to-face communication, there are some basic rules of behavior. that should be followed when online. The basic rule is simple: treat others in the same way you would want to be treated. Imagine how you'd feel if you were in the other person's shoes.

For anything you're about to send: ask yourself, "Would I say this to the person's face?" If the answer is no, rewrite and reread. Repeat the process till you feel sure that you'd feel comfortable saying the words to the person's face.

If someone in the chat room is rude to you, your instinct is to fire back in the same manner. But try not to do so. You should either ignore the person, or use your chat software to block their messages. If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room.

Everyone was new to the network once. Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake whether it's a stupid question or an unnecessarily long answer be kind about it. If it's a small mistake, you may not need to say anything. Even if you feel strongly about, think twice before saying anything. Having good manners yourself doesn't give you license to correct everyone else.

If you decide to tell someone about a mistake, point it out politely. At the same time, if you find you are wrong, be sure to correct yourself and apologize to those that you have offended.

It is not polite to ask others, personal questions such as their age, sex, and marital status. Unless you know the person very well, and you are both comfortable with sharing personal information, don't ask such questions.

When you send short messages to a person, you must______.

A．make sure that they mean no harm

B．read them again and again

C．say something good to hear

D．repeat them later to the person' s face