Read and judge. (读下面的短文并判断“T”或“F”)    

     I went to Hainan with my parents this Spring Festival. On Monday , I went swimming in the sea.

The next day, I went to Wuyi Mountain. It's beautiful. We went to Sanya on Wednesday. There is

a beautiful bay (湾). We ate seafood there. The last day, we went to Ultima Thule (天涯海角).

We took many pictures there. We got back home by plane on Friday. We had a good time.    

( )1. Our family went to Hainan this Spring Festival.    

(     )2. I went to swim in the swimming pool.    

(     )3. The second day , we went to Wuyi Mountain.    

(     )4. We took many pictures in Sanya.    

(     )5. We went home by train.

为了认识和掌握季节变动的规律，通常采用季节指数（季节比率）指标予以测定。