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【单选题】
下列表述正确的是（ ）。A.
父母的血型分别为A型和O型，其子女的血型也只会是A型或O型
B.
吸气时．人的肺容积增大，肺内气压大于大气压
C.
含酸味的水果一般是酸性食品，而乳酪、甜点一般是碱性食品
D.
艾滋病病毒能在蚊虫体内生存、繁殖，会通过蚊虫叮咬传播给人类
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举一反三
【简答题】设A为3阶矩阵，∣A∣=1，则∣-2A∣=
【简答题】设A为3阶矩阵, ,则 = 。
【单选题】Which of the following is an example of a conceptual slippery slope argument?
A.
A person who never votes is politically non-participatory. The difference between voting once in your life and voting never is not a significant difference. A person who votes in annual elections at least thirty times is politically active. ________________________________________ Therefore, there is no significant difference between being politically active and being politically non participatory.
B.
A person who never votes is politically non-participatory. The difference between voting once in your life and voting never is a very significant difference. A person who votes in annual elections at least thirty times is politically active. ________________________________________ Therefore, there is a very significant difference between being politically active and being politically non participatory.
C.
A person who never votes is politically non-participatory. The difference between voting once in your life and voting never is not a significant difference. A person who votes in annual elections at least thirty times is politically active. ________________________________________ Therefore, there is a very significant difference between being politically active and being politically non participatory.
D.
A person who never votes is politically non-participatory. A person who votes one more time than a politically non-participatory person is also politically non-participatory. ________________________________________ Therefore, a person who votes in annual elections at least thirty times is politically non-participatory.
E.
none of the above
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