小明上午在校时间为3小时七七分钟，下午在校时间为七小时七0分钟

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问题解答题

小明上午在校时间为3小时七七分钟，下午在校时间为七小时七0分钟，他一天在校有多长时间？

答案

1小时2p分+2小时p0分=人小时1p分

答：他y天在校的时间是人小时1p分．

阅读理解

阅读短文，判断下列句子是否与短文内容相符，相符的打“√”，否则打“×”。

There are three people in my family. My father is a teacher. He likes hamburgers and apples. My mother is

a farmer. She likes bread and bananas. I am a pupil. I like cakes, French fries and Coke

( ) 1. There are four people in my family.

( ) 2. My father likes hamburgers.

( ) 3. My mother is a teacher.

( ) 4. I like cakes, French fries and apples.

多项选择题

根据污染物在水环境中输移、衰减特点以及它们的预测模式，将污染物分为( )。

A．常规污染物

B．特征污染物

C．持久性污染物

D．非持久性污染物