Look and choose the right sentence.(看图选择合适的句子。把句子的序号填入图片下的括号内。)
1. Is Line A shorter than Line B? 2. It's very hot. Why don't you go swimning? 3. Is Circle A smaller than Circle B? 4. Why don't you buy a Chinese kite? 5. This tree isn't taller than that one. 6. There are four cakes in the picture.