快乐阅读，判断正(T)误(F)。

      There are four seasons in a year, spring, summer, fall and winter. In spring, Beijing is warm and windy.

I often wear my sweater. I can fly kites. In summer, it's very hot. I wear my shorts and T-shirt. I can swim.

In fall, it's cool. I put on my pants and jacket. I can eat many fruits. In winter, it's cold. I put on my winter coat.

I can make a snowman.

( ) 1. In spring, Beijing is hot and sunny.

( ) 2. In Beijing, summer is cool.

( ) 3. We can wear pants and jacket in fall.

( ) 4. We can see snow in winter.

简述我国实施科技兴贸战略的成效。