题目

不需要使用碘液的实验是（ ） A . 观察人口腔上皮细胞 B . 探究光合作用的条件是光 C . 观察玉米种子的结构 D . 探究种子萌发会释放能量 答案：D选用方框中所给句子完成对话，有一句是多余的。(5 分)A: Hello! May I speak to Bill?B: Speaking!A: Hi, Bill! This is Jane speaking.B: Hello! 【1】A: I called you yesterday, but nobody answered the telephone. 【2】 B: I went to the World on Water (水上世界) with my parents.A: Really? 【3】 .B: It was great. We saw the dolphin show (海豚表演). It was very wonderful.A: That sounds interesting.B: 【4】 .A: Oh, the day after tomorrow will be my birthday. 【5】 B: Yes, I'd love to. Thanks a lot.A: You're welcome.