9：Travelling companions are a disadvantage, according to the writer, because they ______.

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• A vessel travelling down a narrow channel，especially if the draft is nearly equal to the depth of the water，may set off the nearer side. This effect is known as（）.

  A . smelling the bottom B . squatting C . bank suction D . bank cushio

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• 计算题：测定发热量时，已知煤的热容量为10425J/g，称取空干基煤样量为1.0014g，内筒水的温升为2.433℃，冷却校正值为0.0127℃，点火热为50J，已知Sb，ad为2.05%，Mt为9.3%，Mad为1.57%，Hd为3.46%，求Qgr，d及Qnet，ar各为多少？

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• 相对于传统的K-Ar体系定年方法，40Ar-39Ar方法的主要优点是什么？

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• Which of the following specifications is a companion to the IEEE 802.1w Rapid Spanning Tree  Protocol （RSTP） algorithm， and warrants the use multiple spanning-trees？ （）

  A .  IEEE 802.1s （MST） B .  IEEE 802.1Q （CST） C .  Cisco PVST+ D .  IEEE 802.1d （STP） E .  None of the other alternatives apply

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• 在一个容器中，反应2NO2（g）2NO（g）+O2（9），恒温条件下达到平衡后，若加入一定的Ar气体保持总压力不变，平衡将会（）。

  A . 向正反应方向移动 B . 向逆反应方向移动 C . 没有变化 D . 不能判断

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• companion和company的原来都是指“一起吃面包的人”。

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• I shall have companion in the house after all these ________ years.

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• In the sentence “Reading has always been... my great invincible companion”, which of the following has the closest meaning with the word “invincible”?

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• What difficulties did the slaves have in travelling the Underground Railroad to freedom?

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• Jessica will ______ scarce funds to buy the movie ticket and scarce time travelling to and from the movie and sitting through it.

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• The young man worked very hard and earned some money to ______ his travelling expense.

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• A family travelling allows us to spend _____ time together and enjoy our family life.

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• Hopeful is Christian’s first companion on the pilgrimage.

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• 9、Label： st 0x80， *AR0+汇编指令中， 操作数“ *AR0+”采用的是以下哪种寻址方式？

  A．立即数寻址 B．间接寻址 C．直接寻址 D．绝对寻址

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• Photography was once an expensive, laborious ordeal reserved for life&39;s greatest milestones. Now, the only apparent cost to taking infinite photos of something as common as a meal is the space on your hard drive and your dining companion&39;s patience.

  But is there another cost, a deeper cost, to documenting a life experience instead of simply enjoying it？ "You hear that you shouldn&39;t take all these photos and interrupt the experience, and it&39;s bad for you, and we&39;re not living in the present moment," says Kristin Diehl, associate professor of marketing at the University of Southern California Marshall School of Business. Diehl and her fellow researchers wanted to find out if that was true, so they embarked on a series of nine experiments in the lab and in the field testing people&39;s enjoyment in the presence or absence of a camera. The results, published in the Journal of Personality and Social Psychology, surprised them. Taking photos actually makes people enjoy what they&39;re doing more, not less. "What we find is you actually look at the world slightly differently, because you&39;re looking for things you want to capture, that you may want to hang onto," Diehl explains. "That gets people more engaged in the experience, and they tend to enjoy it more." Take sightseeing. In one experiment, nearly 200 participants boarded a double-decker bus for a tour of Philadelphia. Both bus tours forbade the use of cell phones but one tour provided digital cameras and encouraged people to take photos. The people who took photos enjoyed the experience significantly more, and said they were more engaged, than those who didn&39;t. Snapping a photo directs attention, which heightens the pleasure you get from whatever you&39;re looking at, Diehl says. It works for things as boring as archaeological(考古的)museums, where people were given eye-tracking glasses and instructed either to take photos or not. "People look longer at things they want to photograph," Diehl says. They report liking the exhibits more, too. To the relief of Instagrammers(Instagram用户)everywhere, it can even makes meals more enjoyable. When people were encouraged to take at least three photos while they ate lunch, they were more immersed in their meals than those who weren&39;t told to take photos. Was it the satisfying click of the camera？ The physical act of the snap？ No, they found; just the act of planning to take a photo—and not actually taking it—had the same joy-boosting effect. "If you want to take mental photos, that works the same way," Diehl says. "Thinking about what you would want to photograph also gets you more engaged." What does the author say about photo-taking in the past？ A.It was a painstaking effort for recording life’s major events. B.It was a luxury that only a few wealthy people could enjoy. C.It was a good way to preserve one’s precious images. D.It was a skill that required lots of practice to master. Kristin Diehl conducted a series of experiments on photo-taking to find out __________.A.what kind of pleasure it would actually bring to photo-takers B.whether people enjoyed it when they did sightseeing C.how it could help to enrich people’s life experiences D.Whether it prevented people enjoying what they were doing What do the results of Diehl’s experiments show that people taking photos？A.They are distracted from what they are doing. B.They can better remember what they see or do. C.They are more absorbed in what catches their eye. D.They can have a better understanding of the world. What is found about museum visitors with the aid of eye-tracking glasses？A.They come out with better photographs of the exhibits. B.They focus more on the exhibits when taking pictures. C.They have a better view of what are on display. D.They follow the historical events more easily. What do we learn from the last paragraph？A.It is better to make plans before taking photos. B.Mental photos can be as beautiful as snapshots. C.Photographers can derive great joy from the click of the camera. D.Even the very thought of taking a photo can have a positive effect. 请帮忙给出每个问题的正确答案和分析，谢谢！

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• When travelling on business, Ben Smith needs to be able to write letters, send emails and analyse data.

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• DMillions of stars are travelling about in space. A few form. groups which journey together, but most of them travel alone.

  And they travel through a universe so large that one star seldom comes near to another. For the most part each star makes its journey in complete loneliness, like a ship on an empty ocean. The ship will be well over a million miles from its nearest neighbor. From this it is easy to understand why a star seldom finds another anywhere neat it. We believe, however, that some two thousand million years ago, another star wandering (漫游) through space, happened to come near our sun, Just as the sun and the moon raise tides (潮汐) on the earth, so this star must have raised tides on the surface of the sun. But they were very different from the small tides that are raised in our oceans; a large tidal wave must have travelled over the surface of the sun, at last forming a mountain so high that we cannot imagine it. As the cause of the disturbance (动荡) came nearer, so the mountain rose higher and higher. And before the star began to move away again, its tidal pull had become so powerful that this mountain was torn to pieces and threw off small parts of itself into space. These small pieces have been going round the sun ever since. They are the planets (行星). 第47题：Millions of stars are ________. [A] following a regular path in space [B] moving about without a fixed course [C] seldom wandering about in the universe [D] always travelling together

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• 10：We gather from the passage that his main purpose in travelling was to ______.

  A.test his endurance B.prove his self-sufficiency C.experience adventure D.respond to new experiences

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• 垄断竞争厂商的边际收益规律是（)。A．MR＜AR=PB．AR＜MR=PC．MR=AR=PD．P=AR

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• With the fast development of science and technology I think _____ in space by ordinary citizens will never be a daydream. A travelledB travelC travelsD travelling

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• 根据表（题9.4-1)所示数据估计出AR（1)模型的参数，即

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• The Fitzgeralds lived so extravagantly that they frequently spent more money than Fitzgerald earned for parties, liquor, entertaining their friends and travelling. It was this living style that nicknamed the decade of the 1920s as .

  A、The Roaring Twenties B、The Jazz Age C、The Dollar Decade D、all of the above

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• 9、以AR为例，亲属之间的亲缘系数如下

  A．姨表兄妹为1/8 B．祖孙为1/4 C．舅甥为1/4 D．同胞兄妹为1/2

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• 9、在一个恒温，容积为2dm3的真空容器中，依次充入温度相同、始态为100 kPa，2 L的N2（g）和200 kPa，1 L的Ar（g），设两者形成理想气体混合物，则容器中的总压力为200kPa

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