单选题The picture is {{U}}tilted{{/U}}. "Please straighten it".

单选题The harder you work, the______likely you are to qualify as a doctor by the time you graduate.

单选题The award was won by Dennis Johnson,______the coach highly respects.

单选题Seeing______pictures, she couldn't help thinking of______happy days in______ ViennA． A．/...the.../ B．/.../...the C．the...the.../ D．the.../...the

单选题In a recent survey, Garber and Hohz concluded that the average half-hour children's television show contains 47 violent acts. When asked about the survey network television executive Jean Pater responded. " I sure as heck don't think that Bugs Bunny's pouring a glass of milk over a chip-munk's head is violence. " Unfortunately, both Garber and Holtz and Pater beg the question. The real issue is whether children view such acts as violence. The violence programming aimed at children almost always appears in the context of fantasy. Cartoon violence generally includes animation, humor, and a remote setting. There is no evidence of direct imitation of television violence by children, though there is evidence that fantasy violence can energize previously learned aggressive response such as a physical attack on another child during play. It is by no means clear, however, that the violence in a portrayal is solely responsible for this energizing effect. Rather, the evidence suggests that any exciting material can trigger subsequent aggressive behavior and that it is the excitation rather than the portrayal of violence that instigates or energizes any subsequent violent behavior. "Cold" imitation of violence by children is extremely rare, and the very occasional evidence of direct, imitative associations between television violence and aggressive behavior has been limited to extremely novel and violent acts by teenagers or adults with already established patterns of deviant behavior. The institutional effect means, in the short term, that exposure to violent portrayals could be dangerous if shortly after the exposure (within 15 to 20 minutes), the child happens to be in a situation that calls for interpersonal aggression'as an appropriate response, for example, an argument between siblings or among peers. This same institutional effect, however, could be produced by other exciting but nonviolent television content or by any other excitational source, including, ironically, a parent's turning off the set. So there is no convincing causal evidence of any cumulative instigational effects such as more aggressive or violent dispositions in children. In fact, passivity is a more likely long term result of heavy viewing of television violence. The evidence does not warrant the strong conclusions advanced by many critics who tend to use television violence as a scapegoat to draw public attention away from the real causes of violence—causes like abusive spouses and parents and a culture that celebrates violence generally.

单选题Exobiology is the study of life ______ other planets. A. in B. at C. on D. to

单选题All the mammals are mentioned as migrating ones EXCEPT ______

单选题I don't want to borrow Kent's big bicycle because I am too small to ride______.

单选题My First Visit to Paris 我初次造访巴黎 My first visit to Paris began in the company of some earnest students. My friend and I, therefore being full of independence and the love of adventure, decided to go off on our own and explore Northern France as hitch-hikers. We managed all right down the main road from Paris to Rouen, because there were lots of vegetable trucks with sympathetic drivers. After that we still made headway along secondary roads to F camp, because we fell in with two family men who had left their wives behind and were off on a spree on their won. In F camp, having decided that it was pointless to reserve money for emergencies such as railway fares, we spent our francs in great contentment, carefully arranging that we should have just enough left for supper and an overnight stay at the Youth Hostel in Dieppe, before catching the early morning boat. Dieppe was only fifty miles away, so we thought it would be a shame to leave F camp until late in the afternoon. There is a hill outside F camp, a steep one.We walked up it quite briskly, saying to each other as the lorries climbed past us, that, after all, we couldn't expect a French truck driver to stop on a hill for us. It would be fine going from the top. It probably would have been fine going at the top, if we had got there before the last of the evening truck convoy had passed on its way westwards along the coast. We failed to realize that at first, and sat in dignified patience on the crest of the hill. We were sitting there two and a half hours later-still dignified, but less patient. Then we went about two hundred yards further down to a little bistro, to have some coffee and ask advice from the proprietor. He told us that there would be no more trucks and explained that our gentlemanly signaling stood out the slightest chance of stopping a private motorist. "This is the way one does it!" he exclaimed, jumping into the centre of the road and completely barring the progress of a vast, gleaming car which contained a rather supercilious Belgian family, who obviously thought nothing to all of the two bedraggled English students. However, having had to stop, they let us into the back seat, after carefully removing all objects of value, including their daughter. Conversation was not easy, but we were more than content to stay quiet—until the car halted suddenly in an out-of-the-way village far from the main road, and we learned to our surprise that the Belgians went no farther. They left us standing disconsolate on a deserted country road, looking sorrowfully after them as their rear lamp disappeared into the darkness. We walked in what we believed to be the general direction of Dieppe for a long time. At about 11 p.m., we heard, far in the distance, a low-pitched staccato rumbling. We ran to a rise in the road and from there we saw, as if it were some mirage, a vast French truck approaching us. It was no time for half measures. My friend sat down by the roadside and hugged his leg, and looked as much like a road accident as nature and the circumstances permitted.I stood in the middle of the road and held my arms out. As soon as the lorry stopped as rushed to either side and gabbled out a plea in poor if voluble French for a lift to Dieppe. There were two aboard, the driver and his relief, and at first they thought we were a holdup. When we got over that, they let us in, and resumed the journey. We reached the Youth Hostel at Dieppe at about 1:30 a.m., or as my friend pointed out, precisely 3 hours after all doors had been lockeD．This, in fact, was not true, because after we climbed over a high wall and tiptoed across the forecourt, we discovered that the door to the washroom was not properly secured, and we were able to make our stealthy way to the men's dormitory where we slept soundly until roused at 9:30 the following morning.

单选题According to the passage, the author likes being with those______.

单选题She believes that she is not a good mother because she does not fit the stereotype of a woman who spends all her time with her children. A. popular image B. common standard C. fixed conception D. pleasant notion

单选题I couldn"t work out why anyone would invent something so boring.

单选题Electronic mail has become an extremely important and popular means of communication. The convenience and efficiency of electronic mail are threatened by the extremely rapid growth in the volume of unsolicited commercial electronic mail. Unsolicited commercial electronic mail is currently estimated to account for over half of all electronic mail traffic, up from an estimated 7 percent in 2001, and the volume continues to rise. Most of these messages are fraudulent or deceptive in one or more respects. The receipt of unsolicited commercial electronic mail may result in costs to recipients who cannot refuse to accept such mail and who incur costs for the storage of such mail, or for the time spent accessing, reviewing, and discarding such mail, or for both. The receipt of a large number of unwanted messages also decreases the convenience of electronic mail and creates a risk that wanted electronic mail messages, both commercial and noncommercial, will be lost, overlooked, or discarded amidst the larger volume of unwanted messages, thus reducing the reliability and usefulness of electronic mail to the recipient. Some commercial electronic mail contains material that many recipients may consider vulgar or pornographic in nature. The growth in unsolicited commercial electronic mail imposes significant monetary costs on providers of Internet access services, businesses, and educational and nonprofit institutions that carry and receive such mail, as there is a finite volume of mail that such providers, businesses, and institutions can handle without further investment in infrastructure. Many senders of unsolicited commercial electronic mail purposefully disguise the source of such mail. Many senders of unsolicited commercial electronic mail purposefully include misleading information in the messages" subject lines in order to induce the recipients to view the messages. While some senders of commercial electronic mail messages provide simple and reliable ways for recipients to reject (or "opt-out" of) receipt of commercial electronic mail from such senders in the future, other senders provide no such "opt-out" mechanism, or refuse to honor the requests of recipients not to receive electronic mail from such senders in the future, or both. Many senders of bulk unsolicited commercial electronic mail use computer programs to gather large numbers of electronic mail addresses on an automated basis from Internet websites or online services where users must post their addresses in order to make full use of the website or service. The problems associated with the rapid growth and abuse of unsolicited commercial electronic mail cannot be solved by the government alone. The development and adoption of technological approaches and the pursuit of cooperative efforts with other countries will be necessary as well.

单选题If a star seems to be moving in a wavy line, we ________it of being a double star.

单选题I found that my cheating in yesterday's English test______to my parents that very evening. A．was reported B．had been reported C．had reported D．was being reported

单选题We have had to raise the prices of our products because of the increase in the cost of ______ materials.

单选题As the core of the management board, he can always come up with ______ ideas to promote the corporation's marketing strategies.

单选题A line segment, which is part of a straight line, begins at one point {{U}}ending{{/U}} at another.

单选题It is very strange but I had an ______ that the plane would crash.

单选题I left for the office earlier than usual this morning ______ traffic jam. A. for the sake of B. in case of C. at the risk of D. in spite of