题目内容

求下列集合的元素个数：{x|x∈N∧x是偶素数}

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求下列集合中的元素个数：{x|x∈N∧x是奇数∧x是偶数}

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All of the following were the considerations for William the Conqueror after he conquered England EXCEPT _____. (Write the Letter on the Answer Area)a.He must reward his supporters with grants of his land.b.He must collect rents from the landholders beneath him.c.He must keep the peace among both the natives and his supporters.d.He must fight against the church for absolute power.

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