单选题Intaglio printing is the (oppose )of relief printing, since (the printing) is (done )form ink that (is below )the surface of the plate.

单选题Between 1871( until) 1891, (the population) of Toronto (more than) tripled, increasing (from )56,000 to 181,000.

单选题Generally, the pattern of open space in urban areas has shaped by commercial systems, governmental actions, and cultural traditions.

单选题Why are marine organisms good candidates for fossilization?

单选题The word "that" in line 27 refers to

单选题The word "Besides" in line 13 is closest in meaning to

单选题According to the passage, why do ants use different compounds as trail pheromones?

单选题On September 6, 1996, civil rights (activist) Rosa Parks (was awarded) the Presidential Medal of Freedom, the (highest )honor the United States government gives (to civilian).

单选题Bacterial (cultures) are used (commercially) in the (preparation) of food products (such)that yogurt ,sour cream ,and vinegar.

单选题The soybean contains vitamins, essential minerals, _____ high percentage of protein.

单选题The chief (commercial) source of bromine is ocean water, from (what) the element is extracted by (means of) chemical (replacement) by chlorine.

单选题It can be inferred from paragraph 3 that Pasteur employed a swam-necked flask to (a) store sterilized liquids for use in future experiments (b) prevent heat from building up in a solution (c) disprove a criticism of his conclusions (d) estimate the number of organisms in a liter of air

单选题The author mentions "seeds and fruits" in line 2 as examples of

单选题Searching for (alternate) forms of energy does not (necessary) mean (the abandonment) of fossil fuels as an energy (source).

单选题[此试题无题干]

单选题Project on Digestion Student A: Hi, Ira. Student B: Hello, Michael. I guess it is time to ______. It is ______ Wednesday at 4 in the afternoon. Student A: Yes, I hope to ______ school next year, so it is important I learn lots about the digestive system. I really hope we ______ this project as I am trying to keep my first class average. As you know, it is really ______ medical school. Student B: I will help you ______ but I am taking this course only because I have to. I actually hate all sciences but my program requires me to ______ in science and I have heard this biology course is quite easy. Student A: I don"t know how easy it is. My sister took this course from the same instructor last year and she said Dr. Seinfeld is a ______. There are also ______ projects late—so we only have 5 days left to do this. We ______. Student B: How long do you think it will take us? Student A: Well, once we ______ and determine which sections each of us will do, then we will each probably have to do about four or five hours of research. After that, we should meet again and ______ that we researched. Student B: Okay, I have time to research tonight, but I also have a French exam I need to study for on Tuesday night, so I would ______ this project by Monday. Student A: Okay, I have to do that French exam, too. Student B: All I know about the term digestion is that, ______, it means the breakdown of the food by ______. Student A: Yes, there are both physical and chemical processes that reduce food ______. Only small molecules can cross cell membranes and be absorbed. Student B: Do you want to research the chemical processes, Michael? I could research the physical processes. Student A: That is a good idea, Ira. I"m most interested in the chemical process. Lots of people think since we eat meat for protein and ______ carbohydrates that these ______ our bodies. It is the amino acids from the protein, the sugars from the carbohydrate and ______ that actually enter the blood and are transported to the body to nourish our cells. Student B: Well, I know that digestion starts in the mouth—that we have 32 teeth, but I will have to do more research on the ______ of digestion. I have never really studied how the food passes through the body. Student A: ______ Sunday afternoon? Student B: Okay. Where do you think I can get books on this? Do you know ______? Student A: Perhaps, we should ______ right now—we should both use different sources. Then we could go to the library before it closes. Student B: It closes at 8, doesn"t it? Student A: No, tonight it ______ 10. It"s only weekends that it closes at eight.

单选题MACHIAVELLI 1 Niccolo Machiavelli, an Italian statesman and political philosopher of the early sixteenth century, is considered the founder of modem political thinking. Machiavelli was a product of Renaissance Florence, a city-state that was struggling for expansion and survival among a competing group of similar states. As a public servant and diplomat, Machiavelli came to understand power politics by observing the spectacle around him without any illusions. In 1512, he was briefly imprisoned and then forced to leave public life. He retired to his country estate, where he recorded his reflections on politics. Two of his books would become classics in political theory: Discourses on the First Ten Books ofLivy, a set of essays on ancient and modem politics, and The Prince, a potent little book that would shock readers for centuries. 2 Machiavelli saw politics as an affair separate from religion and ethics, an activity to be practiced and studied for its own sake. Politics was simply the battle of men in search of power, and since all men were brutal, selfish, and cowardly, politics must follow certain rules. In his most famous work, The Prince (1532), Machiavelli described the means by which a leader may gain and maintain power. The ideal prince was the man who had studied his fellow men, both by reading history and by observing the present, and was willing to exploit their weaknesses. Machiavelli thought that his own time was too corrupt to permit any alternative to the Renaissance despots that he saw all around him. 3 Machiavelli's philosophy arose more from a deeply pessimistic view of human nature than from a lack of moral sense, which many readers criticized in him. He was, and still is, misunderstood to have promoted atheism over religion and criminality over other means of governing. Despite the ruthless connotation of the term "Machiavellian," many of his works, such as the History of Florence (1532), express republican principles. Machiavelli's supporters saw him not as a cynic who gloried in evil but as a scientist of politics who saw the world more clearly than others and reported what he saw with lucidity and honesty. 4 The cultural impact of Machiavelli's philosophy was far-reaching, and negative interpretations have persisted. The dramatic literature of the late sixteenth century, notably the plays of Shakespeare, often featured a villainous but humorous character type known as the Machiavel. The Machiavel character loved evil for its own sake, and this delight in evil made all other motivation unnecessary. The Machiavel had a habit of using humorous monologues to comment on his own wickedness and contempt for goodness. Shakespeare's principal Machiavel characters are the treacherous Iago in Othello, the ruthlessly ambitious Edmund in King Lear, and the murderous title character in Richard III.

单选题The author mentions Thomas Jefferson in paragraph 1 as an example of (a) a leader during the Revolution (b) an inventor of new farming techniques (c) a philosopher who believed farmers were essential to the creation of a good society (d) a farmer who guided the agrarian movement toward an emphasis on economic development