There are four seasons in ()year.()first season is spring.It is()best one of()four.

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• 英语好的帮我看下这些作业哈!阅读理解(1)There are four seasons in a year.They are spring,summer,autumn and winter.Spring is the first season in a year.The sky is blue and the trees are green.Farmers are busy in the fields.They plant crops.Summer comes after spring.It is hot.The days are long and the nights are short.It often rains.Swimming is the best sports in summer.People often go swimming in rivers and lakes.Autumn is neither cold nor hot.It is the best season.It is
• There are four seasons in ()year.()first season is spring.It is()best one of()four.填冠词,并且说明原因.
• There are four seasons in ()year.()first season is spring.It is()best one of()four.
• There are four seasons in a year.They are spring,autumn and winter.I—— spring怎么
• 设函数f(x)=1-a/2×x²＋ax-㏑x﹙a∈R﹚ 1.当a=1时.求函数f(x)的极值 2.当a＞1时.函数f(x)的单调性