2023年港澳台联考数学（真题）
一：选择题：本大题共12小题；每小题5分，共60分。
若集合<Object: word/embeddings/oleObject1.bin>
则<Object: word/embeddings/oleObject2.bin>
<Object: word/embeddings/oleObject3.bin>
<Object: word/embeddings/oleObject4.bin>
<Object: word/embeddings/oleObject5.bin>
设向量<Object: word/embeddings/oleObject6.bin>
，则<Object: word/embeddings/oleObject7.bin>
的夹角为（ ）
<Object: word/embeddings/oleObject8.bin>
<Object: word/embeddings/oleObject9.bin>
<Object: word/embeddings/oleObject10.bin>
设等差数列
<Object: word/embeddin ...