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网络计费管理的主要目的是控制和监测网络操作的______。
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What does Edward cover in the draft contract
2 Thirty-two people watched Kitty Genovese being killed right beneath their win dows. She was their neighbor. Yet none of the 32 helped her. Not one even called the po lice. Was this in gunman cruelty Was it lack of feeling about one’s fellow man "Not so," say scientists John Barley and Bib Fatane. These men went beyond the headlines to probe the reasons why people didn’t act. They found that a person has to go through two steps before he can help. First he has to notice that is an emergency. Suppose you see a middle-aged man fall to the side-walk, is he having a heart attack Is he in a coma from diabetes Or is he about to sleep off a drunk Is the smoke coming into the room from a leak in the air conditioning Is it "steam pipes," Or is it really smoke from a fire It’s not always easy to tell if you are faced with a real emergency. Second, and more important, the person faced with an emergency must feel personal ly responsible. He must feel that he must help, or the person won’t get the help he needs. The researchers found that a lot depends on how many people are around. They had college students in to be "tested. " Some came alone. Some came with one or two others. And some came in large groups. The receptionist started them off on the "tests. " Then she went into the next room. A curtain divided the "testing room" and the room into which she went. Soon the students heard a scream, the noise of file cabinets falling and cry for help. All of this had been pre-recorded on a tape-recorder. Eight out of ten of the students taking the test alone acted to help. Of the students in pairs, only two out of the ten helped. Of the students in group, none helped. In other words, in a group, Americans often fail to act. They feel that others will act. They, themselves, needn’t. They do not feel any direct responsibility. Are people bothered by situation where people are in trouble Yes, scientists found that the people were emotional, they sweated, they had trembling hands. They felt that other person’s trouble. But they did not act. They were in a group. Their actions were shaped by the actions of those they were with. The researchers have conducted an experiment to prove that people will act in emergencies when______.
在HTML语言中，＜IMG＞标记用于表示______。
阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。 An Early Form of Jazz Music Music comes in many forms; most countries have a style of their own. At the turn of the last century, (51) jazz was born, America had no prominent. (52) of its own. No one knows exactly when it was invented or by whom. But it began to be (53) in the early 1890s. Jazz is America’s contribution to (54) music. In contrast to classical music, which (55) formal European traditions, jazz is spontaneous and free in form. It bubbles with energy, (56) the moods, interests, and emotions of the people. In the 1920s jazz (57) like America. And so it does today. The (58) of the music are as interesting as the music itself. American Negroes, or blacks, as they are called today, were the jazz pioneers. They were brought to the Southern states (59) slaves. They were sold to plantation owners and forced to work long hours. When a Negro died his friends and relatives (60) a procession to carry the body to the cemetery. In New Orleans, a band often accompanied the (61) . On the way to the cemetery the band played slow, solemn music suited to the occasion. (62) on the way home the mood changed. Spirits lifted. Death had removed one of their number, but the living were glad to be (63) . The band played (64) music, improvising on both the harmony and the melody of the tunes (65) at the funeral. This music made everyone want to dance. It was an early form of jazz.
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