73. In the first place， extra studies bring about unhealthy impacts on physical growth of children. Educational experts point out that， it is equally important to take some sport activities instead of extra studies when children have spent the whole day in a boring classroom.

　　首先，額外的學習對孩子們的身體發(fā)育是不利的。教育專家指出，孩子們在枯燥的教室里呆了一整天后，從事一些體育活動，而不是額外的學習，是非常重要的。

 

　　74. Children are undergoing fast physical development； lack of physical exercise may produce disastrous influence on their later life.

　　孩子們正處于身體快速發(fā)育時期，缺乏體育鍛煉可能會對他們未來的生活造成嚴重的影響。

 

　　75. In the second place， from psychological aspect， the majority of children seem to tend to have an unfavorable attitude toward additional educational activities.

　　第二，從心理上講，大部分孩子似乎對額外的學習沒有什么好感。

 

　　76. It is hard to imagine a student focusing their energy on textbook while other children are playing.

　　當別的孩子在玩耍的時候，很難想象一個學生能集中精力在課本上。