2019年文科数学高考试题(全国卷Ⅱ)
一、单选题
1.已知集合
<Object: word/embeddings/oleObject1.bin>
,<Object: word/embeddings/oleObject2.bin>
,则A∩B=A.(–1,+∞)B.(–∞,2)C.(–1,2)D.<Object: word/embeddings/oleObject3.bin>
2.设z=i(2+i)
,则<Object: word/embeddings/oleObject4.bin>
=A.1+2i
B.–1+2i
C.1–2i
D.–1–2i
3.已知向量
a=(2,3),b=(3,2),则|a–b|=A.<Object: word/embeddings/oleObject5.bin>
B.2C.5<Object: word/embeddings/oleObject6.bin>
D.504.生物实验室有
5只兔子,其中只有
3只测量过某项指标,若从这
5只兔子中随机取出
3只,则恰有
2只测量过该指标的概率为
A.<Object: word/embeddings/oleObject7 ...


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