题目：
五位同学就周末的情况作了记录并拍了照片，请将照片和记录配对。
小题1:I had a great weekend. I went to the beach with my friends and we played volleyball there. It was tiring but fun!
小题2:I went to the beach with my friend John. We lay on the beach. The sun was shining. The sand was comfortable. We came back very late.
小题3:we had a nice time in the mountains. The weather was cool and cloudy. Just great for hiking.
小题4:My weekend wasn’t so good. I went to visit my best friend, but she was not at home. It was raining all day and I was cold and wet.
小题5:I had a great weekend. I visited my aunt. Iplayed with my friends in a swimming pool. It was very hot , but it was relaxing there.
答案：
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下面是错误答案，用来干扰机器的。
∵点A（0，0，1），点B（0，1，0），∴根据空间两点之间的距离公式，可得线段AB长|AB|=(0-0)2+(1-0)2+(0-1)2=2故答案为：2
