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提问人：网友hhhh7142 发布时间：2022-01-07

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Choose one of the following research tasks. For an...

Choose one of the following research tasks. For any selected task, use R language to get data and analyze data. Also develop models to discover interesting information and knowledge from the data with R language. Please notify that: 1) submit your project report in a word document and also a R code source file, including the data you use. 2) the report should include data illustration (exploring any patterns you find interesting), the whole model development process, and the results of model. Validity of models should be checked and tested. Performance of models should be evaluated, comparing with a trivial model if possible. 3) novelty of the project will be encouraged by giving more credit to your score. 4) submission deadline: 2020. 06. 30 Task 1. Statistical modelling with one of the data below: 1) 滴滴出行海口数据集分析与预测 2) 上海市交通流预测 3) 贵州市智慧交通预测 4) 人工智能辅助糖尿病遗传风险预测 5) 中文糖尿病标注数据集 6) 其他数据集的分析与建模 Task 2. Text mining and modelling by using web scrapping data with R language. The topics can be non-exclusively as follows: 1) 美团、天猫、或京东平台上商业广告文案与销量分析预测 2) 美团、天猫、或京东平台上顾客评论与满意度评分预测 3) 南京市房价、房租数据分析与预测 4) COVID-19与就业市场影响分析 5) B站与青年人影响分析 6) 其他爬虫数据分析与建模 Perform in-depth analyses with your data. Statistical models are much better if applicable.

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第1题

Ⅲ. Cloze （20 points) Directions: For each blank in the following passage, there are fo

Ⅲ. Cloze (20 points)

Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the answer sheet.

The first and smallest unit that can be discussed in relation to language is the word. In speaking, the choice of words is (21) the utmost importance. Proper selection will eliminate one source of (22) breakdown in the communication cycle. Too often, careless use of words (23) a meeting of the minds of the speaker and listener. The words used by the speaker may (24) unfavorable reactions in the listener (25) interfere with his comprehension; hence, the transmission-reception system breaks down.

(26) , inaccurate or indefinite words may make (27) difficult for the listener. to understand the. (28) which is being transmitted to him. The speaker who does not have specific words in his working vocabulary may be (29) to explain or describe in a (30) that can be understood by his listeners.

21. A. of

B. at

C. for

D. on

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第2题

Ⅲ. Cloze （20 points) Directions: For each blank in the following passage, there are fo

Ⅲ. Cloze (20 points)

Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the answer sheet.

We are interested in the weather because it (21) us so directly—what we wear, (22) we do, and even how we feel. Geographers, however, are (23) interested in climate than in weather. Climate is the pattern of all the weather conditions over a long period of time. Generally (24) , climate (25) to these normal weather conditions, not (26) daily or yearly changes.

Climate, like weather, changes (27) time. It is true (28) these changes (29) a long time, but not as long as we might expect. Records show that over the centuries large portions of the earth have experienced great changes (30) climate.

21. A. effects

B. defects

C. infects

D. affects

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第3题

Ⅲ. Cloze （20 points) Directions: For each blank in the following passage, there are fo

Ⅲ. Cloze (20 points)

Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the answer sheet.

Vitamins are organic compounds necessary in small amounts in the diet for the normal growth and maintenance of life of animals, including man.

They do not provide energy, 21 do they construct or build any part of the body. They are needed for 22 foods into energy and body maintenance. There are thirteen or more of them, and if 23 is missing a deficiency disease becomes 24 .

Vitamins are, similar because they are made of the same elements--usually carbon, hydrogen, oxygen, and 25 nitrogen. They are different 26 their elements are arranged differently, and each vitamin 27 one or more specific functions in the body.

28 enough vitamins is essential to life, although the body has no nutritional use for 29 vitamins. Many people, 30 , believe in being on the "safe side" and thus take extra vitamins. However, a well-balanced diet will usually meet all the body's vitamin needs.

21. A. either

B. so

C. nor

D. never

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第4题

Ⅲ. Cloze （30 points) Directions: For each blank in the following passage, there are fo

Ⅲ. Cloze (30 points)

Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the Answer Sheet.

Times have changed and the ideas of the young and the old about the same thing are often ill contra diction. For example, parents and teenagers often disagree about the amount of freedom and responsibility that young people (21) to have. The teenager is more independent and often wants to be (22) to choose his own friends, select his own courses in school, plan for his own vocational (23) , and earn and spend his own money, and generally (24) his own life in a more independent (25) than many parents are able to (26) .

Most problems (27) teenagers and their parents yield to (导致) (28) planning and decision making. Within ally particular family, (29) are avoided and problems are solved when all of the persons take (30) in the situation, and (31) in working it out. (32) parents and young people learn how to get (33) well with each other and develop skills in understanding and (34) understood, even (35) most difficult problems are relieved and a situation might appear that teenagers and their parents can some times see eye to eye.

21. A. is

B. should

C. will

D. are

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第5题

Ⅲ. Cloze （20 points) Directions: For each blank in the following passage, there are fo

Ⅲ. Cloze (20 points)

Directions: For each blank in the following passage, there are four choices marked A, B, C and D. Choose the one that is most suitable and mark your answer by blackening the corresponding letter on the answer sheet.

Americans are proud of their variety and individuality, yet they love and respect few things more than a uniform, whether it is the (21) of an elevator operator or the uniform. of a five-star general. Why are uniforms so (22) in the United States？

Among the arguments (23) uniforms, one of the first is that in the eyes of most people they look more (24) than civilian clothes. People have become conditioned to expect (25) quality from a man who wears a uniform. The television repairman who wears a uniform (26) to inspire more trust than one who appears in (27) clothes.

Uniforms also have many practical benefits. They save on other clothes. They (28) on laundry bills.

Uniforms also give (29) to some practical problems. Though they are long lasting, often their initial expense is (30) than the cost of civilian clothes. Some uniforms are also expensive to maintain, requiring professional dry cleaning rather than the home laundering possible with many types of civilian clothes.

21. A. clothing

B. costume

C. uniform

D. cloth

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第6题

Which of the following is the writer's attitude？ ______.A．Parents should choose friends fo

Which of the following is the writer's attitude？ ______.

A．Parents should choose friends for their children.

B．Children should choose anything they like.

C．Parents should understand their children better.

D．Teenagers should only go to their friends for help.

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第7题

Questions 23-28 •Read the newspaper article below about business telecard. •Fo

Questions 23-28

•Read the newspaper article below about business telecard.

•For each question (23-28), choose the correct answer.

•Mark one letter (A, B or C) on your Answer Sheet.

BUSINESS TELECARD INTERNATIONAL

You can use your Business Telecard International at any card phone in the UK. Here is some information about making international phone calls.

You can now phone almost any country in the world, although in some cases you can only call major cities. When you cannot make direct dialling calls, you can ask the international operator to help you. This is more expensive and takes more time, but it may be helpful if you want to speak to a particular person and no one else; in this case you should ask for a “person-to-person” call. Even more expensive is a reverse charge call where the person who receives the call pays.

If the international line is busy, you can reserve a call; explain the number you want and the operator will call you back when the line is free.

You can save money by calling outside office hours, e.g. early in the morning, late at night, and on Sundays. Remember that the time may be different in the country you are calling. International time is based on GMT (Greenwich Mean Time); London is on GMT and Moscow, for example, is 3 hours ahead. There is one problem; change to DST (Daylight Saving Time) for the Summer. In the UK, clocks are put forward one hour in Spring and put back in Autumn, and so London is actually one hour ahead of GMT in the Summer. If you are unsure about the time, the operator-will help you.

You can use your Business Telecard International for domestic calls as well, but there will be an additional charge over the standard rate.

What is the most expensive type of call？

A．Reverse charge call.

B．Through the operator.

C．Direct dial.

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第8题

Which one is a traditional Hangzhou cuisine？

A、hotpot

B、West Lake Vinegar Fish

C、Fo Taoqiang

D、Rolling Donkey

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第9题

We object __________ punishing a whole group for one person's fault.A、onB、aboutC、fo

We object __________ punishing a whole group for one person's fault.

A、on

B、about

C、for

D、to

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第10题

TATP can be detonated by______.A．clapping one's handB．throwing it on the floorC．putting fo

TATP can be detonated by______.

A．clapping one's hand

B．throwing it on the floor

C．putting foot on it

D．touching it

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第11题

Proud as the boss is, he will have to ______ his wrong doings one day.A．ask forB．answer fo

Proud as the boss is, he will have to ______ his wrong doings one day.

A．ask for

B．answer for

C．send for

D．care for

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