A:双子叶杂草对2,4﹣D的敏感性强
B:2,4﹣D促进小麦的最适浓度比促进双子叶杂草的最适浓度大
C:2,4﹣D对小麦的生长无作用
D:同一浓度的2,4﹣D对小麦和杂草的作用不同学科
阅读理解。
Aunt Judy's birthday is coming. She will be 38 years old. Dad and Mum are going to take me to her house. She lives in Guangzhou. We are going to go there by train. Her birthday party will be on Saturday. We are leaving on Friday afternoon. And we are coming back on Sunday evening. I am going to give my dear Aunt Judy a picture . I am drawing it now. I am drawing some beautiful flowers. I am drawing a small dog, too. That's because she likes dogs. The picture will be very nice.