题目

阅读下面短文，根据短文内容用方框内所给词语的适当形式填空，使短文语义完整。(请你一定要注意词语的形式变化!)to must ask unusual it when early who notice ifto must ask unusual it when early who notice if My name is Jim White. I live in America. I had a very【1】experience on Sunday. I saw a UFO in the daytime.【2】this spring, I went outside with my friend Bill【3】lived close to me. We were walking to a hill【4】I saw a large bright light dancing in the sky. I called Jim and asked him to look up. He kept【5】, “What is that?” “A U能在水溶液中大量共存的一组离子是A. 、、、                  B.、、、C. 、、、                 D.、、、