首届世界互联网大会上,信息领域安全成为专家们热议的话题之一。专家指出,大数据建设要高度重视个人信息安全、保护个人隐私。这是因为保护个人隐私　(　　)

①可以缓解人们对人格独立的担忧

②使个人的私人信息都能拿出来共

③有利于保证人们自由舒畅地生活

④不让每个人都有只属于自己的空间

填写单词 根据句子意思, 在空格中填写适当的单词, 使句子完整、正确。

Here are four seasons in a year — spring, ____ , autumn and winter.

Frank was ____ in 2000. He is fifteen this year.

It's 12:00 at noon. It's time for students to have____ in the dining hall.

To keep____ , you'd better exercise every day and eat more fruit and vegetables.

In China, many children are taken____ of by their grandparents in the village.

— I've ____ been to a water park before.

— Me neither.

What does John want to be when he____ up?

A boy ____  himself in P. E. class. The teacher and two students took him to the  hospital at once.