听录音，选出你所听到的句子。
( ) 1. A. Air keeps the paper high in the sky. B. Air keeps the balloon high in the sky.
( ) 2. A. We should walk every day. B. We should read every day.
( ) 3. A. There are a lot of cars in the street. B. There are a lot of bikes in my school.
( ) 4. A. We use paper to make toys. B. We use wood to make toys.
( ) 5. A. We should stop at the red light. B. We should walk at the green light.
类型：听音，选择听到的内容
难度系数：较易0.85
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