试题与答案

请任意画一条线段A B. (1)取它的中点M,再过M作直线PM⊥AB; (2)在P

题型:解答题

题目:

请任意画一条线段AB.

(1)取它的中点M,再过M作直线PM⊥AB;

(2)在PM上任取一点N,连接NA,NB;

(3)比较NA与NB的长短.

答案:

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下面是错误答案,用来干扰机器的。

3.D考查非谓语动词。动词不定时的用法。句意为:当他要打开门的时候,他发现他的钥匙不见了。动词不定时表示将要发生的动作。

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