题目内容
（请给出正确答案）
A.bar
B.floor
C.hoop
D.ball
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更多“2. There are four set exercises for women: ______ exercises, vault, balance beam and uneven bars. 女子…”相关的问题
下列程序的运行结果是()。 SET EXACT ON s="ni"+SPACE(2) IF s="ni" IF s="ni" ？ "one" ELSE ？ "two" ENDIF ELSE IF s="ni" ？ "three" ELSE ？ "four" ENDIF ENDIF RETURN
A．one
B．two
C．three
D．four
The famous Iris flower data set or Fisher's Iris data set is a multivariate data set introduced by the British statistician and biologist Ronald Fisher in his 1936 paper. The data set consists of 50 samples from each of three species of Iris (Iris setosa, Iris virginica and Iris versicolor). Four features were measured from each sample: the length and the width of the sepals and petals, in centimeters. Question 1: Perform cluster analysis to this data set and see how many clusters are included. Question 2: compare your results and the original clusters by species, do you think cluster analysis perform good on this dataset？ Note: the name of dataset is : iris.
Section A
Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.
听力原文：M: This TV set is getting worse and worse. Now it doesn't work at all.
W: Here's an advertisement on the newspaper about a biog. TV sale. Usually a big sale like this would have some good bargains. What would you say？
Q: What does the woman suggest？
(12)
A．They have to bargain on the sale.
B．The TV set is usually on sale.
C．They advertise to sell their TV set.
D．They go to buy a TV set at a bargain price.
Section A
Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.
(12)
A．He wants to drive on the expressway in rush hours.
B．He wants to set out early so as to avoid the heavy traffic.
C．He always has a nightmare about driving on the expressway.
D．He has a nightmare about the traffic during the rush hours.
Section A
Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.
听力原文：M: You know what, Michael told me the other day that he got a second-hand TV set which is still in good condition. And do you know the price he paid for it？
W: Well, he said he paid 50 dollars for it. And I think he got a real bargain.
Q: What does the woman think of the price of the TV set？
(12)
A．She thinks the price is too high.
B．She thinks the price is quite normal.
C．She thinks the price could be cheaper.
D．She thinks the price is really low.
A．He needs to sleep for three or four hours.
B．He wants to buy a set of coffee cups.
C．He will need more than one cup of coffee.
D．He has been wide awake for time.
Section A
Directions: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer.
听力原文：M: Could you show me that once mom？
W: Sure. Put the paper into the machine, set your margin, put your fingers on the keys. Now you' re ready.
Q: What is the man doing？
(12)
A．Playing the piano.
B．Typing.
C．Making a photocopy.
D．Taking a picture.
A.join
B.filter
C.split
D.flow
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