Look and choose the right sentence．（看圖選擇合適的句子。把句子的序號填入圖片下的括號內。）
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.
