Hi, Millie

    How are you? I haven't seen you s____ last month. I h____ you've gone to Thailand. Have you come back y____? I've been here in Hong Kong for two days? My parents and I are having a really f____ time here. Today, we s____ the whole day in Hong Kong Disneyland. It's a f____ theme park and i____ four different parks. We took photos in front of the whale fountain at the e____. Space Mountain is a really e____ roller coaster. It moved at high speed, and we were screaming and laughing t____ the whole ride.

下列事件能体现法律最主要特征的是（     ）

it,  is,  for,  music,  time,  class (.)

____

①农业生产中要合理使用农药和化肥  ②工业废水和生活污水处理达标后再排放   ③不用含磷洗衣粉  ④将海水淡化．