单选题Which one of the following is a counterexample to the statement “If two angles are supplementary, then they are right angles?”A If two angles are complementary, then they are not right angles.B If two angles are fight angles, then they are supplementar

题目
单选题
Which one of the following is a counterexample to the statement “If two angles are supplementary, then they are right angles?”
A

If two angles are complementary, then they are not right angles.

B

If two angles are fight angles, then they are supplementary.

C

If two angles are not supplementary, then they are not right angles.

D

If two angles are supplementary, then one could measure 100° and one could measure 80°.

E

If two angles are not fight angles, then they are not supplementary.

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更多“Which one of the following is a counterexample to the statem”相关问题

  • 第1题：

    Which one of the following studies the internal structure of words， and the rules by which words are ( ) formed？

    A.Morphology
    B.Syntax
    C.Phonology
    D.Semantics

    答案：A
    解析：
    考查语言学知识。题干为：以下哪一项研究单词的内部结构，以及单词形成的规则？A项Morphology(形态学)研究词的内部结构和构词规则。B项Syntax(句法学)主要研究语言的句子结构。C项Phonology(音系学)研究语音的产生、传播、接受过程，考查人类语言中的声音。D项Semantics(语义学)不仅关心字词作为词汇的意义，还有语言中词之上和之下的意义。

  • 第2题：

    Which of the following routing protocols uses AS-Path as one of the methods to build the routing table?（）

    • A、OSPF
    • B、IS-IS
    • C、EIGRP
    • D、BGP

    正确答案:D

  • 第3题：

    Which one of the following @Function to all "response"and "response to response"documents of parent documents?（）

    • A、@Responses      
    • B、@AllChildren    
    • C、@AllResponses  
    • D、@AllDescendants 

    正确答案:D

  • 第4题：

    单选题
    Which one of the following is a counterexample to the statement “If two angles are supplementary, then they are right angles?”
    A

    If two angles are complementary, then they are not right angles.

    B

    If two angles are fight angles, then they are supplementary.

    C

    If two angles are not supplementary, then they are not right angles.

    D

    If two angles are supplementary, then one could measure 100° and one could measure 80°.

    E

    If two angles are not fight angles, then they are not supplementary.


    正确答案： E
    解析：
    A counterexample is an example that proves a statement to be false. Answer D shows one example where angles are supplementary but are not right angles, since one measures 100° and the other measures 80°.

  • 第5题：

    单选题
    Which of the following numbers provides a counterexample to the statement above?
    A

    9

    B

    12

    C

    13

    D

    14

    E

    15


    正确答案： D
    解析：
    为证明所有3的倍数为奇数这个陈述是错误的。需要证明至少有一个3的倍数不是奇数。选项中只有12是3的倍数且不是奇数。

  • 第6题：

    单选题
    Which one of the following is not relevant to the others?（）
    A

    airport

    B

    airfield

    C

    airline

    D

    air-conditioned


    正确答案： D
    解析： 暂无解析

  • 第7题：

    Which one of the following is not relevant to the others?（）

    Aairport

    Bairfield

    Cairline

    Dair-conditioned


    D
    略

  • 第8题：

    which one of the following database elements is not updated when the design task is run?（）

    • A、forms
    • B、views
    • C、roles
    • D、agents

    正确答案:C

  • 第9题：

    单选题
    Which one of the following is the safety signal?（）.
    A

    SSS

    B

    TTT

    C

    XXX

    D

    FFF


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Which one does not belong to subjectivity quiz questions in the following English tests? _____
    A

    Writing

    B

    Oral test

    C

    Translation

    D

    Cloze test


    正确答案： C
    解析：
    完形填空不属于主观性试题。

  • 第11题：

    单选题
    Which of the following describes one of the apartments the speaker has seen?
    A

    A railway on one side and a lake on the other.

    B

    A busy road on one side and a lake on the other.

    C

    A busy road on one side and a railway on the other.


    正确答案： C
    解析：
    独白明确提到One apartment I saw had been empty for two years. It has a busy road on one side and a railway on the other!

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