SAT官网每日一题.doc

2010年02月08日考试类型：Mathematics Standard Multiple Choice CRead the following SAT test question, then click on a button to select your answerThe function is graphed in the above. If the function is defined by , for how many values of between and does equal ?A. None B. OneC. Two D. ThreeE. More than three 正确答案: C解析:The graph of the function is the same as the graph of the function translated up units. The function intersects the three times, but if the graph is shifted up units, then the graph will intersect the only twice. Therefore, is equal to for exactly two values of between and 2010年02月09日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole. The jellyfishs slow pulsing action propels it in a graceful, seemingly - drift, but its tentacles contain a poison potent enough to stun a swimming human.A. sinister B. rhythmicC. murky D. harmlessE. patient 正确答案: D解析:The jellyfish is presented as seeming the opposite of harmful. Only “harmless” fits the logic required by “but.” 2010年02月07日考试类型：Writing Improving Sentences Part of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A. Mexican painter Frida Kahlo drew inspiration from her Mexican heritage, where she incorporated native and religious symbols into her workA. where she incorporatedB. in which she incorporatedC. incorporatedD. incorporatingE. therefore, she incorporated 正确答案: 解析: DChoice (D) is correct. It avoids the error of the original by eliminating the relative pronoun “where,” which does not logically refer to anything else in the sentence, and by reducing the needlessly wordy “she incorporated” to “incorporating.”2010年02月06日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole. Scientists are studying the birth and growth of thunderstorms to discover what causes the difference between showers that enable crops to - and - storms that cause floods and erosions.A. flourish . . violentB. wither . . damagingC. grow . . harmless D. parch . . severeE. multiply . . essential 正确答案: 解析:A shower is gentle rain that waters crops, making them “flourish.” In contrast, the deluge of rain in a “violent” storm may damage crops and soil. 2010年02月05日考试类型：Mathematics Standard Multiple Choice Read the following SAT test question, then click on a button to select your answer.How many integers satisfy the inequality above?A. One B. TwoC. Four D. SevenE. Eight 正确答案: D解析:If , and is an integer, then the If , and is an integer, then the possible values of are the integers greater than or equal to and less than or equal to , so the possible values for are , , , , , and . Therefore, there are seven integers that satisfy the given inequal2010年02月03日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole. The archaeologist enjoyed the - life she led while gathering artifacts; she never stayed at any one site long enough to get bored. A. stealthy B. nomadic C. clamorous D. indiscreet E. rustic 正确答案: B解析:The archaeologist “never stayed at any one site long enough to get bored.” Her life can be described as “nomadic” or characterized by moving from place to place. ity.2010年02月04日考试类型：Writing Identifying Sentence Errors The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E. Today photography (is )(widely recognized )as a fine art, (featuring them )in art museums, discussed by critics, and (studied in )art history courses.(No error)A. A = isB. B = widely recognized C. C = featuring themD. D = studied in E. E = No error正确答案: C解析:The error in this sentence occurs at (C), where there is improper pronoun use and an inappropriate verb form. There is nothing in the sentence to which the pronoun “them” can logically refer, so “them” should be deleted. In addition, “featured” should be used in place of “featuring.”2010年02月03日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole. The archaeologist enjoyed the - life she led while gathering artifacts; she never stayed at any one site long enough to get bored. A. stealthy B. nomadic C. clamorous D. indiscreet E. rustic 正确答案: B解析:The archaeologist “never stayed at any one site long enough to get bored.” Her life can be described as “nomadic” or characterized by moving from place to place. 2010年02月02日考试类型：Critical Reading Sentence Completions Read the following SAT test question, then click on a button to select your answer. If and , then A. 3B. 5C. 6 D. 8E. 9 正确答案: D解析:Since and, it follows that and, therefore, . So .2010年02月01日考试类型：Writing Improving Sentences Part of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A.They determine the color and flavor of honey by the flowers from which the nectar is taken.A. They determine the color and flavor of honey by the B. Honeys color and flavor is determined by whichC. Honeys color and flavor determined by those D. The color of honey, and its flavor, determined by theE. The color and flavor of honey are determined by the 正确答案: B解析:Choice (E) is correct. It avoids the error of the original by removing the unnecessary pronoun “They,” and by using a well-constructed phrase, “The color and flavor are ” 2010年01月31日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.The rumor was of the - variety, spreading slowly and almost imperceptibly until, finally, everyone seemed to have heard the story. A. manifest B. dilatory C. insidious D. aggressiveE. expeditious 正确答案: B解析:Choice (C) is correct. A rumor that spreads slowly and subtly can be described as “insidious.”2010年01月30日考试类型：Mathematics Standard Multiple Choice Read the following SAT test question, then click on a button to select your answerA person bought cards for cents. If the next day the price of the cards was cents each, how much did the person save per card by buying at the earlier price?A. centsB. centsC. cents D. centsE. cents 正确答案: B解析:You can find the savings per card by subtracting the price per card on the earlier day from the price per card on the later day. Since cards cost cents on the earlier day, the price per card was , or cents. The price per card on the later day was cents, so is the amount saved per card by buying at the earlier price.2010年01月29日考试类型：Writing Identifying Sentence Errors The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E. Encouraged fromher teacher, Vanessa decided toABenterthe short story contest witha story about Cher experience growing up in Canada. No errorDEA. AB. BC. CD. DE. E 正确答案: A解析:The error in this sentence occurs at (A), where there is an improper idiom. The idiom is “Encouraged by,” not “Encouraged from.”2010年01月28日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.It was difficult to believe that the sophisticated piece of technology had - through the centuries from such - and rudimentary apparatus.A. developed . . an intricateB. resulted . . a complicated C. evolved . . a quaint D. degenerated . . an obsolescentE. differed . . an exotic 正确答案: B解析:The phrase “through the centuries” suggests that the first missing term will describe how the “sophisticated piece of technology” developed over a period of time. The word “such” indicates that the second missing term will contrast with “sophisticated.” Only “evolved . . a quaint” satisfies both requirements.2010年01月27日考试类型：Mathematics Standard Multiple Choice Read the following SAT test question, then click on a button to select your answer., , , and are points on a line, with the midpoint of segment . The lengths of segments , , and are , , and , respectively. What is the length of segment ?A. 2 B. 4 C. 6 D. 10E. 12 正确答案: B解析:The key to this question lies in not jumping to incorrect conclusions. The question names the points on a line. It gives you a variety of information about the points. The one thing it does not do is tell you the order in which the points fall.Many students assume that the order of the points is , then , then , then . As you will see, if you try to locate the points in this order, you will be unable to answer the question.What Is the Question Asking?The question asks for the length of line segment . In order to find this length, you have to establish the relative positions of the four points on the line.What Do You Know?Try to draw the figure. You might be tempted to locate point first. Unfortunately, you dont have enough information about , yet, to place it.You can place , and because is the midpoint of .You know the lengths of three of the line segments:Because you know where is, you can label the length of .Build the Figure, Adding What You Know and What You Can Figure OutBecause is the midpoint of , you know that and are each units long.Where can you place point ?It has to be units from , because .It also has to be units from , because .So the only location for is between and , but closer to .Place point and mark the distances.It is now an easy matter to figure out the answer to the question:is units.is units closer to than , so is units.2010年01月26日考试类型：Writing Improving Sentences Part of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A. British author Charles Dodgson, best known by his pen name, Lewis Carroll, is renowned for when he wrote two of the most famous and admired childrens books in the world, Alices Adventures in Wonderland and its sequel, Through the Looking-Glass.A. is renowned for when he wrote B. renowned in that he wrote C. received renown, he wrote D. is renowned for writingE. was renowned and wrote 正确答案: D解析:Choice (D) is correct. It avoids the error of the original by reducing the awkward “for when he wrote” to the idiomatic and concise “for writing.” 2010年01月25日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.Paradoxically, this successful entrepreneur is sometimes - and at other times reclusive. 3A. autonomous B. dispassionateC. solitary D. unthinking E. gregarious 正确答案: E解析:The paradox in the sentence is that the successful entrepreneur can be “reclusive” at times and “gregarious” at others. The entrepreneur alternately prefers isolation and its opposite, the company of people.2010年01月24日考试类型：Mathematics Standard Multiple Choice Read the following SAT test question, then click on a button to select your answer.If a number is chosen at random from the set, what is the probability that it is a member of the solution set of both and ?A. 0 B. C. D. E. 正确答案: C解析:If and , then . The numbers from the listed set that satisfy these inequalities are and . There are five elements in the listed set, so the probability of a number chosen at random from the set being a member of the solution set of both inequalities is .2010年01月23日考试类型：Writing Identifying Sentence Errors The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E.The United States isthe largestproducer of ABcranberries and cranberry products, most of themCare consumed thereand in Canada. No errorDEA. AB. B C. C D. DE. E正确答案: C解析:The error in this sentence occurs at (C), where an inappropriate pronoun creates a comma splice. The relative pronoun “which” should be used instead.2010年01月20日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.Currently rising temperatures in the Arctic and Antarctic are - of a still warmer world that could result from an excess of atmospheric carbon dioxide produced by the burning of oil, gas, and coal. A. polaritiesB. harbingers C. vestigesD. counterexamplesE. aftereffects正确答案: B解析:A harbinger is a sign of something yet to come. Temperatures are presented as “harbingers” in this sentence because they show that “a still warmer world” might be coming.2010年01月21日考试类型： Mathematics Standard Multiple Choice Read the following SAT test question, then click on a button to select your answer.In the figure above, if is a quadrilateral and is a triangle, what is the sum of the degree measures of the marked angles? A. 420 B. 490 C. 540 D. 560 E. 580 正确答案: C解析:The marked angles in the figure are angles , , , and , which are the angles of a quadrilateral, and angles , , and , which are the angles of a triangle. The sum of the degree measures of the angles of a quadrilateral is , and the sum of the degree measures of the angles of a triangle is . Therefore, the sum of the degree measures of the marked angles is plus , which is .2010年01月20日考试类型：Writing Improving Sentences Part of the following sentence is underlined; beneath the sentence are five ways of phrasing the underlined material. Select the option that produces the best sentence. If you think the original phrasing produces a better sentence than any of the alternatives, select choice A.Enrico Caruso sang opera in Italy before traveling to the United States, then he gave his first performance at the Metropolitan Opera in November 1903A. then B. whenC. and whichD. in thatE. where正确答案: E解析:Choice (E) is correct. It avoids the error of the original by using the appropriate pronoun “where” to indicate that the “United States” was where Caruso gave “his first performance at the Metropolitan Opera.”2010年01月19日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.Joe Louis was - fighter: he inspired fear in many of his opponentsA. a serene B. an impetuousC. an insipid D. a malleableE. a redoubtable正确答案: E解析:The colon introduces an explanation, an illustration, or a restatement of the first part of the sentence. “Redoubtable” is the best choice because it accurately describes someone who “inspires fear” in others.2010年01月19日考试类型：Mathematics Read the following SAT test question, then click on a button to select your answer.The sum of the positive odd integers less than is subtracted from the sum of the positive even integers less than or equal to . What is the resulting difference?A. 0 B. 25 C. 50D. 100 E. 200 正确答案: B解析:The sum of the positive odd integers less than is , and the sum of the positive even integers less than or equal to is . When the first sum is subtracted from the second, the terms can be regrouped to form , which is just , where there are ones. Therefore, the correct answer is . 2010年01月17日考试类型：Writing Identifying Sentence Errors The following sentence contains either a single error or no error at all. If the sentence contains an error, select the one underlined part that must be changed to make the sentence correct. If the sentence contains no error, select choice E.Today more thantwo million Mayan Indians live inABnorthern Yucatn and highland Guatemala in a manner similar tothose oftheir ancestors. CDNo errorEA. A B. B C. C D. D E. E 正确答案: D解析:The error in this sentence occurs at (D), where there is an inappropriate pronoun. The singular pronoun that is needed to refer to the singular noun manner.2010年01月16日考试类型：Critical Reading Sentence Completions Choose the word or set of words that, when inserted in the sentence, best fits the meaning of the sentence as a whole.Until Florence Nightingale made nursing - , it was considered a - profession.A. scientific . . painstakingB. essential . . dangerousC. noble . . lof