单选题The probability of guessing the correct answer to a certain test question is x/12. If the probability of NOT guessing the correct answer to this question is 2/3, what is the value of x?A 2B 3C 4D 6E 12

题目
单选题
The probability of guessing the correct answer to a certain test question is x/12. If the probability of NOT guessing the correct answer to this question is 2/3, what is the value of x?
A

2

B

3

C

4

D

6

E

12

相似考题

1.Part ADirections: You will hear 10 short dialogues. For each dialogue, there is one question and four possible answers. Choose the correct answer ― A, B, C or D, and mark it in your test booklet. You will have 15 seconds to answer the question and you will hear each dialogue ONLY ONCE.听力原文：M: I had a very strange dream last night. I dreamt I won a competition.W: Oh, really? What did you win? Money? A new car?M: I won a holiday on a desert island. I hope it will come true.What did the man win in his dream?A．A holiday.B．A new ear.C．Some money.D．A desert.

2.Whose ( )is it to answer the questionA、possibleB、lessonC、turnD、time

3.Have you found an answer ________ the question?A、ofB、forC、onD、to

4.Jeff managed to answer the question ( ) the given time.A、withinB、tillC、byD、at

更多“单选题The probability of guessing the correct answer to a certain test question is x/12. If the probability of NOT guessing the correct answer to this question is 2/3, what is the value of x?A 2B 3C 4D 6E 12”相关问题

  • 第1题：

    请马上回答我的问题。

    Please answer my question_________ _________．


    正确答案：
    .31. at once

  • 第2题：

    She cannot answer this question at once,but can find the answer to it from that book.

    A: early
    B: now
    C: immediately
    D:soon

    答案：C
    解析：
    句意为：她不能立刻回答这个问题，但是可以从那本书里找到答案。early意为“早”, now意为“现在”,soon意为“很快”,at once意为“马上”,immediately意为“马上”。

  • 第3题：

    Which of the following answer is correct to express the value 8 in octal number？（）    

    • A、 010
    • B、 0x10
    • C、 08
    • D、 0x8

    正确答案:A

  • 第4题：

    单选题
    The question was so difficult that （） people could answer it.
    A

    little

    B

    afew

    C

    few


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    In answer ______ my question, my sister nodded in ______ .
    A

    for; satisfaction

    B

    to; agreement

    C

    of; amazement

    D

    with; surprise


    正确答案： D
    解析：
    句意：在回答我的提问时，妹妹同意地点了点头。answer to（对问题的）回答。answer for对…负责，为…担保，因…受责备。agreement同意，一致；协定，协议。satisfaction满意，满足，令人满意的事物。amazement惊愕，惊异。surprise惊奇，诧异。

  • 第6题：

    单选题
    Solve the problem and indicate the best of the answer choices given.　 A certain standardized test taken by business school applicants demands that the test takers answer 37 quantitative questions within 75 minutes. Which of the following is closest to the average amount of time the test takers can spend on each question?
    A

    1 minute, 58 seconds

    B

    2 minutes, 2 seconds

    C

    2 minutes, 5 seconds

    D

    2 minutes, 12 seconds

    E

    121.6 minutes


    正确答案： E
    解析：
    由题目可知，考生需要在75分钟做完37道题，故通过计算可知平均121.6秒钟完成一道题，故B项正确。

  • 第7题：

    单选题
    This question was （）difficult that no one could answer it.
    A

    too

    B

    very

    C

    so


    正确答案： B
    解析： 暂无解析

  • 第8题：

    填空题
    On a test worth a total of 200 points, Jenna lost 7% of those points because she forgot to answer one question, but she got 5 points added back to her score for answering the extra credit question correctly. If she answered all of the other questions on the test correctly, how many points did she earn on the test?____

    正确答案： 191
    解析：
    这份试卷共有200分，Jenna少做一道题丢掉了7% of 200 =0.07 × 200 =14，有得到附加分五分，如果其它题都能答对，那么她一共得200-14 +5 = 191分。

  • 第9题：

    问答题
    ABCDEFGHIJKLMNOPQRSTUVWXYZ　　The alphabet is here to help you with these questions.You need to work out a different code for each question.Choose the correct answer.ExampleIf the code for FOOT is ENNS,what is the code for TOE? Answer:SND．If the code for ORANGE is RUDQJH, what does SLQN mean?A.OHMJB.PINKC.QJOLD.POKE

    正确答案： PINK
    解析：
    ORANGE的密码是RUDQJH，由此可知，密码的每个字母是原单词每个字母按26个英文字母的顺序后推两个，因此S对应的答案为P，L对应的答案位I，Q对应的答案为N，N对应的答案是K。

  • 第10题：

    单选题
    NEWS BROADCAST 2　　Question 8 is based on the following news. At the end of the news item, you will be given 10 seconds to answer the question. 　　Now listen to the news. Which of the following is CORRECT about the latest earthquake in Indonesia?
    A

    It led to a terrible tsunami at 7: 30.

    B

    More than 1,000 people have died.

    C

    Buildings were shaken in Padang.

    D

    No severe damage has been caused.


    正确答案： A
    解析： 细节判断题。新闻开头报道了最近发生在印度尼西亚的地震。新闻中提到，地震没有造成明显的损坏，因此可知D项正确。选项B、C是两周前地震造成的影响，可排除。
    【听力原文】
    Indonesia has been rocked again by an earthquake. The trembler hit around 7: 30 Eastern Time, shaking the buildings in the capital Jakarta. No sign of visible damage. The U.S. Geological Survey says the quake had a magnitude of 6.3. The epicenter was out at sea about 115 miles from Jakarta. So far no tsunami warning has been issued. It is the latest in a series of quakes that has rattled Indonesia recently. More than 1,000 people are believed to have died after twin earthquakes destroyed buildings in Padang just over two weeks ago.

  • 第11题：

    单选题
    Whenever you ask Bob a question, he doesn't hardly give a satisfactory answer.
    A

    Whenever

    B

    ask

    C

    doesn't hardly give

    D

    a satisfactory answer


    正确答案： B
    解析：

  • 第12题：

    单选题
    Anyone can answer such a question as this one, _____?
    A

    can he

    B

    can’t they

    C

    can’t he

    D

    don’t they


    正确答案： A
    解析：
    句意：任何人都能回答这样的问题，不是么？这是一个反义疑问句，当陈述部分主语是不定代词anyone, everyone, someone等时，疑问部分一般用复数形式they, 故本题最佳选项是B项。

  • 第13题：

    Decide on the correct stress pattern of the answer to the question: Where did you see him?

    A．We saw him playing by the river.
    B．We saw him playing by the river.
    C．We saw him playing by the river.
    D．We saw him playing by the river.

    答案：D
    解析：
    考查句子重读。问题意为“你们是在哪里看到他的 ”答案应强调地点，即by the river“河边”。

  • 第14题：

    This question was （）difficult that no one could answer it.

    • A、too
    • B、very
    • C、so

    正确答案:C

  • 第15题：

    A customer purchases a virtual media key on a x3650 M3. They ask where to install the key. Which of the following provides the correct answer？（）

    • A、Problem Determination and Service Guide
    • B、xRef
    • C、ServerGuide Hardware Reference
    • D、COG

    正确答案:A

  • 第16题：

    单选题
    For Question 1, select one answer choice.　 The main point of the passage is to ______.
    A

    describe the premise of a science fiction novel

    B

    propose a remedy for traumatic brain injuries

    C

    question certain medical research

    D

    admit to the failings of pharmaceutical innovation

    E

    reject the concept of drug trials


    正确答案： C
    解析：
    文段主要讨论了一种新的药物对于治疗灾后创伤的正面以及负面的影响，通过正反两方面的对比，作者没有得出明确的结论，而是“puts the treatment into question”，因此，选项C最符合题意。

  • 第17题：

    多选题
    For this question, indicate all of the answer choices that apply. If 0
    A

    x < 1/x

    B

    -x < x

    C

    x2 < x3

    D

    x2 < x

    E

    x < x+2


    正确答案： A,B,D,E
    解析：
    取x=1/2，代入验证可知ABDE四项是正确的。

  • 第18题：

    问答题
    George took a test of a certain number of questions, each question having the same value. He answered 10 questions incorrectly. This resulted in an accuracy score of 60%. How many questions were in the test?

    正确答案： 25
    解析：
    这是一道计算题，George的正确率是60%，错误率就是40%，我们用10除以40%，就可以得到总题数。

  • 第19题：

    单选题
    —Can you answer this question?—Sorry, I can ______ understand it.
    A

    hardly

    B

    almost

    C

    quite

    D

    nearly


    正确答案： D
    解析：
    考查副词辨析。句意为：——你能回答这个问题吗?——对不起，我几乎不能理解它。由“Sorry”可知，这里表示否定含义。hardly意为“几乎不”；almost意为“几乎”；quite意为“的确”；nearly意为“几乎”。A项符合语境。

  • 第20题：

    问答题
    Practice 1Directions: In this part of the test, you will answer three questions based on the information provided. You will have 30 seconds to read the information before the questions begin. For each question, begin responding immediately after you hear a beep. No additional preparation time is provided. You will have 15 seconds to respond to Questions 1 and 2 and 30 seconds to respond to Question 3.Practice 1　　Question 1: How much are tickets?　　Question 2: I heard Time Against Time was coming out. Is it playing there yet?　　Question 3: I might not be able to go to the theater until 7:30. Which movies are playing at around that time?

    正确答案： 1: It’s eight dollars and ninety-five cents for adult tickets. And for kids, it’s five dollars and ninety-five cents.
    或:An adult ticket is eight ninety-five and a ticket for a child is five ninety-five.
    解 析:解答本类题型最重要的是从屏幕显示的文件或日程表中快速找到问题对应的部分从而作答。本题问How much…询问的是价格,所以在日程表下面找到票价作答。记住dollar和cent后面要加复数-s,dollar和cent之间要用and连接。
    2:Yes, it is playing in the theater, and it plays at several different times.
    或:Yes, it is being shown at the theater at present.
    解 析:本部分的问题通过录音形式播放,不会显示在屏幕上,所以更要集中注意力听好。这道题用不含疑问词的疑问句提问,所以首先要回答Yes或No,再做进一步必要的说明。虽然可以直接使用提问中的is playing表示“上映”,但此处使用is being shown更体现多样的表达能力。
    3:Well, you have many choices. At seven forty, Geneva is playing and five minutes later, Whispers in the Silence is playing. And a little bit later, at ten to eight, Rabbit Stew is going to start.
    或:At seven forty we’re showing Geneva, and Whispers in the Silence will start five minutes later. You could also see Rabbit Stew at seven fifty.
    解 析:本题要求考生综合所给的事件或信息进行说明。以上问题询问某个特定时间段有些什么电影,所以要恰当使用时间状语从句回答。说时间时,除了答案中所用的方法外,还可使用以下这种方法。7:40 twenty to eight;7:45 quarter to eight;7:50 ten to eight。
    解析： 暂无解析

  • 第21题：

    单选题
    INTERVIEW2　　In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Mark the best answer to each question on ANSWER SHEET TWO. 　　Questions 1 to 5 are based on an interview. At the end of the interview you will be given 10 seconds to answer each of the following five questions. 　　Now listen to the interview. Which of the following is NOT Vera’s tip for finding a new job?
    A

    Narrow down the scope of search.

    B

    Decide what you value the most.

    C

    Do some soul searching.

    D

    Make your resume distinctive.


    正确答案： A
    解析： 关于找工作的建议，访谈中女士提到，进行核心搜索。接着又提到，按优先次序列出5到10件你认为在工作中最重要的事情。也就是找出你最想要的。另外还谈到，必须使你的简历脱颖而出。故排除B、C、D项。文中并未提及选项A内容，故A项为正确答案。

  • 第22题：

    单选题
    A customer purchases a virtual media key on a x3650 M3. They ask where to install the key. Which of the following provides the correct answer？（）
    A

    Problem Determination and Service Guide

    B

    xRef

    C

    ServerGuide Hardware Reference

    D

    COG


    正确答案： B
    解析： 暂无解析

  • 第23题：

    单选题
    Which of the following answer is correct to express the value 8 in octal number？（）
    A

     010

    B

     0x10

    C

     08

    D

     0x8


    正确答案： A
    解析： 八进制值以0开头，以0x开头的为十六进制值，八进制中不能出现数字8，最大只有7。

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