中考英语数据统计单选题80题

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中考英语数据统计单选题80题
1. There are ______ students in our class.
A. thirty
B. thirtieth
C. the thirty
D. the thirtieth
答案:A。

本题考查基数词的用法。

A 选项“thirty”是基数词,表示“三十”;B 选项“thirtieth”是序数词,表示“第三十”;C 选项“the thirty”表述错误;D 选项“the thirtieth”是“第三十”,通常用于顺序表达。

在本句中要表达的是数量“三十个学生”,所以用基数词“thirty”,故选A。

2. The price of the coat is ______.
A. two hundred yuan
B. two hundreds yuan
C. two hundred of yuan
D. two hundreds of yuan
答案:A。

“hundred”在表示具体数字时,用“基数词+ hundred”,且其后不加“s”,也不和“of”连用,所以B、C、D 选项错误,A 选项“two hundred yuan”表示“两百元”,故选A。

3. We have learned about ______ English words.
A. five hundred
B. five hundreds
C. five hundred of
D. five hundreds of
答案:A。

同第2 题,“five hundred”表示“五百”,B 选项“hundreds”用在“hundreds of”结构中,表示“成百上千的”;C 选项“five hundred of”表述错误;D 选项“five hundreds of”也错误,故选A。

4. The library has ______ books.
A. thousands of
B. thousand of
C. two thousands
D. two thousand of
答案:A。

“thousands of”表示“成千上万的”,是固定短语,B 选项“thousand of”错误;“thousand”前面有具体数字时,其后不加“s”,也不用“of”,C 选项“two thousands”错误;D 选项“two thousand of”错误,故选A。

5. ______ people visit the museum every day.
A. Hundred
B. Hundreds
C. Hundred of
D. Hundreds of
答案:D。

“hundreds of”表示“成百上千的”,A 选项“Hundred”单独使用时要与“具体数字”连用;B 选项“Hundreds”单独使用错误;C 选项“Hundred of”错误,故选D。

6. There are 20 boys and 15 girls in the class. The number of boys is ______ than that of girls.
A. more
B. less
C. fewer
D. smaller
答案:A。

本题考查形容词比较级的用法。

“more”用于修饰可数名词复数,表示“更多的”,男孩的数量20 多于女孩的数量15。

“less”用于不可数名词,“fewer”用于可数名词复数表示“更少的”,“smaller”一般指尺寸大小。

所以选A。

7. The price of this shirt is $50, and the price of that one is $60. This shirt is ______ than that one.
A. cheaper
B. more expensive
C. higher
D. lower
答案:A。

“cheaper”表示“更便宜的”,这件衬衫价格50 美元,那件60 美元,这件更便宜。

“more expensive”是“更贵的”,与题意不符。

“higher”和“lower”一般不用于价格,所以选A。

8. In the last exam, Tom got 80 points and Jerry got 90 points. Jerry's score is ______ than Tom's.
A. higher
B. lower
C. worse
D. better
答案:A。

分数比较,“higher”表示“更高的”,杰瑞90 分,汤姆80 分,杰瑞分数更高。

“lower”相反,“worse”和“better”一般不用于分数,所以选A。

9. The population of City A is 500,000 and the population of City B is 800,000. The population of City A is ______ than that of City B.
A. smaller
B. larger
C. fewer
D. more
答案:A。

人口比较用“smaller”或“larger”,A 市50 万人口,B 市80 万人口,A 市人口更少,用“smaller”,所以选A。

10. This year, our school has 300 students, and last year it had 250 students. The number of students this year is ______ than last year.
A. more
B. less
C. fewer
D. greater
答案:D。

“greater”表示“更大的;更多的”,用于数量的比较,今年300 名学生,去年250 名,今年数量更多,所以选D。

11. The bar chart shows that the number of students who like math is _______ than those who like science.
A. more
B. less
C. higher
D. lower
答案:C。

本题考查对柱状图的理解以及比较级的用法。

“number”表示数量,“高”用“high”,“低”用“low”,数量的比较用“higher”和“lower”,喜欢数学的学生数量比喜欢科学的多,所以用“higher”。

12. In the pie chart, the sector representing English takes up 30%. That means _______ of the total is for English.
A. one third
B. three tenths
C. three fifths
D. three fourths
答案:B。

本题考查对饼状图的理解和分数的表达。

整个圆为100%,30%即十分之三,用“three tenths”表示。

13. The line graph indicates that the sales of this product _______ steadily in the past few months.
A. increased
B. have increased
C. were increasing
D. have been increasing
答案:D。

本题考查对折线图的理解和时态。

“in the past few months”是现在完成进行时的标志,表示过去几个月一直在增长,所以用“have been increasing”。

14. According to the data table, the average score of Class A is _______ that of Class B.
A. higher than
B. lower than
C. as high as
D. not so good as
答案:A。

本题考查对数据表的分析和比较级的表达。

“average score”平均分数,根据数据比较,A 班的平均分高于B 班,用“higher than”。

15. The histogram reveals that the frequency of the data within the range of 20 - 30 is _______.
A. the highest
B. the lowest
C. higher than others
D. lower than others
答案:A。

本题考查对直方图的解读。

“reveals”揭示,这个范围的数据频率是最高的,用“the highest”。

16. I usually go swimming ______.
A. once a week
B. twice a month
C. three times a year
D. four times a day
答案:A。

本题考查频率词汇的用法。

“once a week”表示“一周一次”,是常见的频率表达。

B 选项“twice a month”表示“一个月两次”;
C 选项“three times a year”表示“一年三次”;
D 选项“four times a day”表示“一天四次”。

根据通常的生活习惯,“usually”表示通常,“once a week”更符合一般的游泳频率。

17. My sister dances ______.
A. always
B. often
C. sometimes
D. never
答案:C。

“always”表示总是;“often”表示经常;“sometimes”表示有时;“never”表示从不。

结合语境,此处说的是姐姐跳舞的频率,“sometimes”更能体现不确定性,符合实际情况。

18. He plays football ______.
A. every day
B. every week
C. every month
D. every year
答案:A。

“every day”表示每天,“every week”表示每周,“every month”表示每月,“every year”表示每年。

对于踢足球这种活动,“every day”更能强调其频繁程度。

19. We have English classes ______.
A. three times a week
B. twice a day
C. five times a month
D. once a year
答案:A。

A 选项“three times a week”表示“一周三次”;B 选项“twice a day”表示“一天两次”;C 选项“five times a month”表示“一个月五次”;D 选项“once a year”表示“一年一次”。

根据一般学校的课程安排,“three times a week”更符合英语课的频率。

20. She reads books ______.
A. seldom
B. rarely
C. frequently
D. hardly ever
答案:C。

“seldom”表示很少;“rarely”表示罕有;“frequently”表示频繁地;“hardly ever”表示几乎不。

在这四个选项中,“frequently”最能体现她读书的频率较高。

21. In a group of numbers: 5, 8, 9, 10, 12, the median is _____.
A. 8
B. 9
C. 10
D. 12
答案:B。

本题考查中位数的概念。

将这组数字从小到大排列为5, 8, 9, 10, 12,中间的数字是9,所以中位数是9。

选项A 8 不是中间的数字;选项C 10 不是中间的数字;选项D 12 不是中间的数字。

22. The following numbers: 2, 2, 3, 3, 4, 4, 4, the mode is _____.
A. 2
B. 3
C. 4
D. None of the above
答案:C。

本题考查众数的概念。

众数是一组数据中出现次数最多的数,在这组数据中4 出现的次数最多,为3 次。

选项A 2 出现的次数不是最多;选项B 3 出现的次数不是最多;选项D 不符合实际,因为存在众数。

23. The average of 5, 7, 9, 11, and 13 is _____.
A. 8
B. 9
C. 10
D. 11
答案:C。

本题考查平均数的计算。

平均数等于所有数的总和除以数的个数,即(5 + 7 + 9 + 11 + 13) ÷ 5 = 10。

选项A 8 计算错误;
选项B 9 计算错误;选项D 11 计算错误。

24. In a set of data: 15, 18, 20, 22, 25, the median is _____.
A. 18
B. 20
C. 22
D. 25
答案:B。

将这组数据从小到大排列为15, 18, 20, 22, 25,中间的数字是20,所以中位数是20。

选项A 18 不是中间的数字;选项C 22 不是中间的数字;选项D 25 不是中间的数字。

25. The following numbers: 3, 6, 6, 8, 9, 12, the median is _____.
A. 6
B. 8
C. 9
D. None of the above
答案:B。

将这组数字从小到大排列为3, 6, 6, 8, 9, 12,中间的两个数字是6 和8,中位数是它们的平均数,即(6 + 8) ÷ 2 = 7,选项中没有7,所以选择D 选项None of the above。

选项A 6 不是中间的数字;选项C 9 不是中间的数字。

26. The sales of this product have been ______ in recent months.
A. rising
B. falling
C. stable
D. fluctuating
答案:A。

本题考查数据趋势。

“rising”表示上升,根据题意,最近几个月产品的销售一直在上升。

选项B“falling”表示下降,不符合题意;选项C“stable”表示稳定,与题目中“have been”的时态不符;选项D“fluctuating”表示波动,不符合句子表达的持续上升的趋势。

27. The number of visitors to the museum ______ steadily over the past year.
A. increased
B. decreased
C. remained
D. varied
答案:C。

本题考查数据趋势。

“remained”表示保持、维持,过去一年博物馆的游客数量保持稳定。

选项A“increased”表示增加,不符合题意;选项B“decreased”表示减少,不符合题意;选项D“varied”表示变化,没有明确是上升还是下降,不符合“steadily”(稳定地)的语境。

28. The temperature has ______ slightly in the last few days.
A. gone up
B. gone down
C. stayed the same
D. changed a lot
答案:A。

本题考查数据趋势。

“gone up”表示上升,近几天温度
略有上升。

选项B“gone down”表示下降,不符合题意;选项C“stayed the same”表示保持不变,与“slightly”( 轻微地)不符;选项D“changed
a lot”表示变化很大,与“slightly”冲突。

29. The company's profits ______ sharply since the new policy was implemented.
A. rose
B. dropped
C. kept
D. fluctuated
答案:B。

本题考查数据趋势。

“dropped”表示下降,自从新政策实施以来,公司的利润大幅下降。

选项A“rose”表示上升,不符合题意;选项C“kept”表示保持,不符合“sharply” 急剧地)的语境;选项D“fluctuated”表示波动,没有明确是上升还是下降。

30. The population growth rate ______ in this region in the past decade.
A. accelerated
B. decelerated
C. remained constant
D. was unpredictable
答案:B。

本题考查数据趋势。

“decelerated”表示减速,在过去十年,这个地区的人口增长率下降了。

选项A“accelerated”表示加速,不符合题意;选项C“remained constant”表示保持不变,不符合题意;
选项D“was unpredictable”表示不可预测,不符合句子要表达的明确趋势。

31. We can collect data by doing a survey. Which of the following is NOT a common way of conducting a survey?
A. Online questionnaire
B. Face-to-face interview
C. Random guess
D. Telephone interview
答案:C。

本题考查常见的数据收集调查方式。

选项A 在线问卷是一种方便且能覆盖广泛人群的数据收集方式。

选项B 面对面访谈可以更深入地了解被调查者的想法。

选项D 电话访谈也是常用的调查手段。

而选项C 随机猜测不是一种正规有效的数据收集方式,不能用于收集准确可靠的数据。

32. When collecting data about people's preferences for movies, which method is most suitable?
A. Observing people's behavior in the cinema
B. Asking them to write down their preferences
C. Analyzing their social media posts
D. Listening to their conversations in public places
答案:B。

本题考查收集关于人们对电影偏好的数据的合适方法。

选项 A 观察人们在电影院的行为,难以直接了解他们的具体偏好。

选项 C 分析社交媒体帖子,可能存在信息不准确或不全面的情况。

选项D 在公共场所听他们的谈话,这种方式不礼貌且可能侵犯隐私。

而选项B 让他们写下自己的偏好,能够直接且较为准确地获取所需数据。

33. Which of the following is a direct way to collect data about students' performance in exams?
A. Checking their class notes
B. Looking at their homework
C. Reviewing their exam papers
D. Asking their classmates
答案:C。

本题考查收集学生考试成绩数据的直接方式。

选项 A 检查课堂笔记,不能直接反映考试成绩。

选项B 查看作业,作业成绩与考试成绩不完全相同。

选项D 询问同学,同学的了解可能不准确。

而选项C 审查他们的考试试卷,是最直接获取学生考试成绩数据的方式。

34. If we want to collect data about the sales of a product in different regions, which method is often used?
A. Collecting customer feedback
B. Analyzing market reports
C. Visiting stores in each region
D. Checking the company's internal records
答案:D。

本题考查收集产品在不同地区销售数据的常用方法。

选项 A 收集客户反馈,主要侧重于客户对产品的看法,而非销售数
据。

选项B 分析市场报告,可能不够具体和准确。

选项C 访问每个地区的商店,费时费力且难以全面覆盖。

而选项D 查看公司的内部记录,能够直接、准确地获取产品在不同地区的销售数据。

35. To collect data about the traffic situation in a city, which of the following is NOT effective?
A. Installing cameras on the roads
B. Asking pedestrians for their opinions
C. Checking the traffic police records
D. Monitoring the GPS data of vehicles
答案:B。

本题考查收集城市交通状况数据的有效方法。

选项 A 道路上安装摄像头可以实时获取交通流量等信息。

选项C 查看交警记录能够了解交通事故等情况。

选项D 监测车辆的GPS 数据能分析车辆行驶路线和速度。

而选项B 询问行人的意见,行人的观察具有局限性和主观性,不是收集交通状况数据的有效方式。

36. The measured value of the length of the object was 10 cm, but the actual length was 12 cm. This is a(n) _____.
A. random error
B. systematic error
C. gross error
D. negligible error
答案:B。

本题考查误差类型。

测量值为10cm,实际值为12cm,这是系统性误差。

系统性误差是由于测量系统的缺陷或测量方法的不
正确导致的,具有一定的规律性和方向性。

避免系统性误差需要改进测量系统或方法。

37. In a set of data, the average value calculated was 50, but after rechecking, it should have been 60. This error is most likely a _____.
A. measurement error
B. calculation error
C. sampling error
D. recording error
答案:B。

此题为计算误差。

计算平均值时得出50,实际应为60,这通常是计算过程中的错误导致的。

避免计算误差需要仔细检查计算步骤和公式的使用。

38. The data collected showed that the temperature was 25°C, but the actual temperature was 30°C. This kind of error is called _____.
A. instrumental error
B. human error
C. environmental error
D. calibration error
答案:A。

本题是仪器误差。

收集的数据显示温度为25°C,实际为30°C,可能是测量仪器不准确导致的。

避免仪器误差要定期校准和维护仪器。

39. A survey reported that 80% of people liked the product, but in reality, it was only 60%. This is a _____.
A. sampling bias
B. response bias
C. non-response bias
D. reporting error
答案:D。

这是报告误差。

调查报道80%的人喜欢产品,实际只有60%,说明在报告数据时出现了错误。

避免报告误差要确保数据记录和报告的准确性。

40. The data showed that the sales increased by 20%, but after detailed analysis, it was only 15%. This error is mainly due to _____.
A. incorrect data entry
B. improper data processing
C. inaccurate data collection
D. incomplete data coverage
答案:B。

此题为数据处理不当导致的误差。

数据显示销售增长20%,实际只有15%,可能是在处理数据时出现了问题。

避免这种误差需要采用正确的数据处理方法和流程。

41. The number of students in our class is _____.
A. fifty
B. fifties
C. fiftieth
D. the fiftieth
答案:A。

本题考查基数词的用法。

“The number of...”表示“......的
数量”,其后接基数词,fifty 是基数词“五十”,fifties 是错误表达,fiftieth 是序数词“第五十”,the fiftieth 是“第五十”的特指形式。

这里需要用基数词表示数量,所以选A。

准确表达数量对于数据传达的准确性至关重要。

42. About two-thirds of the work _____finished.
A. have been
B. has been
C. have
D. has
答案:B。

本题考查分数作主语时的主谓一致以及现在完成时的被动语态。

“分数+ of + 名词”作主语时,谓语动词的单复数取决于名词,work 是不可数名词,谓语动词用单数,排除A、C 选项。

work 和finish 是被动关系,要用被动语态,所以选B。

准确运用语法和时态能确保数据表达的准确性。

43. The price of this computer is _____ than that one.
A. much higher
B. more higher
C. much more high
D. more much high
答案:A。

本题考查比较级的用法。

high 的比较级是higher,more 不能修饰比较级,排除B、C、D 选项。

much 可以修饰比较级,强调程度“......得多”,所以选A。

正确使用比较级能清晰准确地呈现数
据差异。

44. There are _____ people in the park on Sundays.
A. thousand of
B. thousands of
C. two thousands
D. two thousand of
答案:B。

本题考查数词的用法。

thousand 表示确切数字时,用“基数词+ thousand”,thousand 后不加s 也不加of;表示不确切数字时,用“thousands of”,所以选B。

准确使用数词才能准确表达数量。

45. The population of China is _____ than that of Japan.
A. much larger
B. more larger
C. much more large
D. more much large
答案:A。

本题考查比较级的用法。

形容人口多用large,比较级是larger,more 不能修饰比较级,much 可以修饰比较级,表示“......得多”,所以选A。

准确运用形容词比较级和修饰词能准确表达人口数据的差异。

46. A survey was conducted to find out students' favorite subjects. 20 students from each grade were selected randomly. This is an example of a(n) ____ sample.
A. representative
B. unrepresentative
C. biased
D. limited
答案:A。

本题考查样本的代表性。

A 选项“representative”意为“具有代表性的”,从每个年级随机选取20 名学生进行调查,这是一个具有代表性的样本。

B 选项“unrepresentative”意为“不具有代表性的”,不符合题意。

C 选项“biased”意为“有偏见的”,这里的抽样方式没有偏见。

D 选项“limited”意为“有限的”,强调数量有限,不是重点。

47. In a study about people's eating habits, only people from one city were surveyed. This sample is likely to be ____.
A. comprehensive
B. narrow
C. diverse
D. accurate
答案:B。

本题考查样本的范围。

B 选项“narrow”意为“狭窄的”,只调查了来自一个城市的人,样本范围狭窄。

A 选项“comprehensive”意为“全面的”,与题目情况不符。

C 选项“diverse”意为“多样的”,此处样本不具备多样性。

D 选项“accurate”意为“准确的”,样本范围窄不一定就不准确,但不能全面反映整体情况。

48. A company wants to know employees' satisfaction. They only asked managers. This is a(n) ____ sample.
A. balanced
B. unbalanced
C. random
D. sufficient
答案:B。

本题考查样本的平衡性。

B 选项“unbalanced”意为“不平衡的”,只询问经理,不能代表全体员工,样本不平衡。

A 选项“balanced”意为“平衡的”,不符合实际情况。

C 选项“random”意为“随机的”,这里不是随机抽取。

D 选项“sufficient”意为“足够的”,样本不具有代表性,不能说足够。

49. To study the reading habits of teenagers, a researcher selected students from different schools and grades. This is a ____ sample.
A. random
B. stratified
C. convenience
D. systematic
答案:B。

本题考查样本的类型。

B 选项“stratified”意为“分层的”,从不同学校和年级选取学生,是分层抽样。

A 选项“random”意为“随机的”,这里更强调分层。

C 选项“convenience”意为“便利的”,不是为了便利而选。

D 选项“systematic”意为“系统的”,不如分层抽样准确。

50. A researcher wants to study the effects of exercise on health. He only chose athletes. This sample is ____.
A. typical
B. atypical
C. inclusive
D. exclusive
答案:B。

本题考查样本的典型性。

B 选项“atypical”意为“非典型的”,只选择运动员来研究运动对健康的影响,样本不具有典型性。

A 选项“typical”意为“典型的”,不符合。

C 选项“inclusive”意为“包含的”,与题意不符。

D 选项“exclusive”意为“排他的”,强调排除其他,不是重点。

51. The data shows that the number of students who passed the exam is 80. But the total number of students is 100. What is the pass rate?
A. 20%
B. 80%
C. 50%
D. 60%
答案:B。

本题考查通过率的计算。

通过率= 通过人数÷总人数×100%。

即80÷100×100% = 80%,所以选择B 选项。

52. The sales of a product in January were 500, and in February they increased to 700. What is the percentage increase?
A. 20%
B. 30%
C. 40%
D. 50%
答案:C。

首先计算增加的数量:700 - 500 = 200。

然后计算增加
的百分比:增加量÷原数量×100% = 200÷500×100% = 40%,故选择C 选项。

53. In a survey, 60% of the respondents said they like sports. If there were 200 respondents, how many people like sports?
A. 80
B. 120
C. 100
D. 150
答案:B。

喜欢体育的人数= 总人数×喜欢体育的比例。

即200×60% = 200×0.6 = 120,选择B 选项。

54. The average score of a class in a test is 80. If there are 30 students in the class and the total score is 2400, is the average score calculated correctly?
A. Yes
B. No
C. Can't tell
D. None of the above
答案:A。

平均分数= 总分数÷人数。

即2400÷30 = 80,与题目中给出的平均分数一致,所以计算正确,选择A 选项。

55. The price of a commodity was $50 last month and it is $60 this month. What is the percentage increase in price?
A. 10%
B. 20%
C. 15%
D. 25%
答案:B。

增加的金额为60 - 50 = 10。

增加的百分比= 增加的金额÷原价×100% = 10÷50×100% = 20%,选择B 选项。

56. When drawing a bar chart, the bars should ______.
A. have different widths
B. be of the same width
C. have no labels
D. be in random colors
答案:B。

本题考查绘制柱状图的规则。

在绘制柱状图时,柱子应该具有相同的宽度,这样才能准确地对比数据。

选项A 不同宽度会导致数据对比不准确;选项C 没有标签则无法清晰了解数据代表的内容;选项D 随机颜色可能会影响数据的清晰展示。

57. In a pie chart, the total of all the sectors should equal ______.
A. 50%
B. 100%
C. 150%
D. 200%
答案:B。

绘制饼图时,所有扇区的总和应等于100%,这样才能完整准确地表示整体。

选项 A 50%不完整;选项 C 150%和选项 D 200%都不符合饼图表示整体的原则。

58. What is the correct way to label the axes in a line graph?
A. Only on the left side
B. Only on the top
C. On both sides and at the top
D. It doesn't matter
答案:C。

在线形图中,正确的坐标轴标注方式是在两侧和顶部都进行标注,这样能更清晰全面地展示数据信息。

选项A 仅在左侧标注不够全面;选项 B 仅在顶部标注也不完整;选项 D 说无所谓是错误的,规范标注很重要。

59. When creating a histogram, the intervals should be ______.
A. unequal
B. equal
C. as you like
D. very large
答案:B。

绘制直方图时,区间应该相等,这样才能保证数据分布的比较具有一致性和准确性。

选项A 不等的区间会使数据比较混乱;选项 C 随意设置不符合规范;选项 D 很大的区间可能会忽略一些重要的数据细节。

60. In a data chart, the title should ______.
A. be very long
B. be short and clear
C. not exist
D. be in a small font
答案:B。

在数据图表中,标题应该简短清晰,能够准确概括图表的主要内容。

选项A 很长的标题可能会显得繁琐;选项C 不存在标题会使图表内容不明确;选项D 用小字体的标题不易看清。

61. The graph shows that the number of students who passed the exam increased by 20%. But if you look closely, you'll find that the total number of students was much smaller than last year. So the increase doesn't mean as much as it seems. What's the main trap here?
A. Ignoring the base number
B. Misunderstanding the percentage
C. Confusing the data sources
D. Missing the time period
答案:A。

本题的陷阱在于忽略了基数。

只看到百分比的增加,而没有考虑学生总数的变化,不能准确判断实际情况。

要避免这种陷阱,需综合考虑数据的各个方面。

62. A report claims that the sales of a product rose by 50%. But when you check the actual numbers, you realize that the starting sales were very low. What kind of trap is this?
A. Being misled by a large percentage
B. Not considering the market size
C. Failing to compare with competitors
D. Ignoring the quality of the product
答案:A。

这道题的陷阱是被较大的百分比所误导。

只关注增长的百分比,而不考虑起始销售数量少的情况,容易得出错误结论。

避免此类陷阱要注重实际数值。

63. The data shows that the average score of a class is 80. But some students scored very high while many others scored much lower. What should we be careful about?
A. Overemphasizing the average
B. Ignoring individual differences
C. Confusing the subject of the data
D. Not considering the exam difficulty
答案:A。

本题陷阱在于过度强调平均分。

平均分不能完全反映个体差异,可能掩盖部分学生的真实情况。

避免此陷阱要关注数据的分布。

64. A survey says that 70% of people prefer a certain brand. But it doesn't mention the sample size or the method of the survey. What's the problem?
A. Unreliable sampling
B. Incomplete information
C. Biased questions
D. Wrong data analysis
答案:B。

此题的陷阱是信息不完整。

没有提及样本大小和调查方法,使得数据可信度降低。

避免此类陷阱要确保数据信息全面。

65. The statistics show that the crime rate has decreased by 10%. But it doesn't take into account the population growth. What might be wrong?
A. Failing to adjust for population changes
B. Using outdated data
C. Incorrect data collection
D. Unclear data presentation
答案:A。

本题的陷阱是未根据人口变化进行调整。

人口增长可能影响对犯罪率变化的准确判断。

避免此陷阱要考虑相关因素的变化。

66. There are different kinds of fruits in the basket. Apples, bananas and oranges are ______.
A. names of fruits
B. types of fruits
C. colors of fruits
D. shapes of fruits
答案:B。

本题考查数据分类中水果类型的表达。

选项A 是水果的名字,选项C 是水果的颜色,选项D 是水果的形状,而题目中说的苹果、香蕉和橙子是水果的类型,所以选B。

67. In a library, books are classified by ______.
A. authors
B. prices
C. pages
D. covers
答案:A。

本题考查书籍分类的方式。

选项 B 是价格,选项 C 是页数,选项 D 是封面,通常图书馆里书籍是按照作者来分类的,所以选A。

68. The students in the class are grouped according to ______.
A. their heights
B. their ages
C. their grades
D. their hobbies
答案:C。

本题考查学生分组的依据。

选项 A 是身高,选项 B 是年龄,选项D 是爱好,在班级中通常是按照成绩来分组的,所以选C。

69. These animals can be classified into two groups: land animals and ______.
A. sea animals
B. sky animals
C. forest animals
D. river animals
答案:A。

本题考查动物的分类。

选项B 天空中的动物这种分类不常见,选项 C 森林动物是陆地动物的一部分,选项 D 河流动物也包含在水里动物中。

通常动物分为陆地动物和海洋动物,所以选A。

70. The data of the sales is sorted by ______.
A. months
B. weeks
C. days
D. years
答案:A。

本题考查销售数据的分类方式。

选项 B 周,选项 C 天,选项D 年,销售数据通常按月份来分类更能清晰反映趋势,所以选A。

71. The survey shows that 90% of people like this product. But there are no details about the sample size. This data is _____.
A. reliable
B. unreliable
C. certain
D. uncertain
答案:B。

本题考查数据可信度评估。

由于没有关于样本大小的细节,仅给出一个比例,无法确定数据的可靠性,所以该数据不可靠。

72. A report claims that the sales of a company increased by 50% last year, but it doesn't mention the comparison period. This data is _____.
A. clear
B. unclear
C. trustworthy
D. untrustworthy
答案:D。

因为没有提到比较的时间段,无法准确判断销售增长的情况,所以此数据不可信。

73. The research states that 80% of students passed the exam, but it doesn't explain how the pass mark was determined. This data is _____.
A. credible
B. incredible
C. definite
D. indefinite
答案:B。

由于没有说明及格分数线是如何确定的,无法判断数据的可信度,所以该数据不可信。

74. A study shows that the average income of a city is $50,000, but it doesn't include information about different income groups. This data is _____.
A. reliable
B. unreliable
C. accurate
D. inaccurate
答案:B。

没有关于不同收入群体的信息,不能全面反映城市的平均收入情况,所以数据不可靠。

75. The statistics say that the crime rate in a town has dropped by 30%, but it doesn't provide information on the methods of data collection. This data is _____.
A. trustworthy
B. untrustworthy
C. certain
D. uncertain
答案:D。

没有提供数据收集的方法,无法确定数据的准确性和可信度,所以该数据不确定。

76. The average temperature of this city in July is 28 degrees Celsius. Last year, it was 2 degrees higher. What was the average temperature in July last year?
A. 26 degrees Celsius
B. 28 degrees Celsius
C. 30 degrees Celsius
D. 32 degrees Celsius
答案:C。

本题考查平均数和简单的数值计算。

已知今年七月平均温度为28 度,去年比今年高2 度,所以去年七月平均温度为28 + 2 = 30 度。

77. In a survey, 60% of the participants like sports. If there are 200 participants, how many people like sports?
A. 80
B. 100
C. 120
D. 140
答案:C。

本题考查百分数的应用。

200 人的60%为200 × 60% = 120 人。

78. The table shows the sales of different products. Product A sold 50 units, Product B sold 30 units, and Product C sold 20 units. What is the ratio of the sales of Product A to Product C?
A. 5:2
B. 2:5
C. 3:2
D. 2:3
答案:A。

本题考查比例的计算。

Product A 销售50 单位,Product
C 销售20 单位,它们的销售比为50:20 = 5:2。

79. The data shows that the population of a town increased by 10% in the last year. If the original population was 50,000, what is the current population?
A. 45,000
B. 50,000
C. 55,000
D. 60,000
答案:C。

本题考查百分比的增长计算。

原人口为50000,增长10%,即增加50000 × 10% = 5000,现有人口为50000 + 5000 = 55000。

80. The graph shows the monthly rainfall. January had 50 mm, February had 40 mm, and March had 60 mm. What is the average monthly rainfall for these three months?
A. 40 mm
B. 50 mm
C. 53.33 mm
D. 60 mm
答案:C。

本题考查平均数的计算。

三个月总降雨量为50 + 40 + 60 = 150 mm,平均每月降雨量为150 ÷ 3 = 50 mm。

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