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The room goes dark. The audience becomes quiet. The music begins. The movie starts. In the US, it
is g   1   to see parents watching cartoons with their children, or a group of male friends watching an action film together.
People often eat popcorn in the c   2   . They drink soda. Theaters also sell candy and chocolate. S   3   
people bring their own food in to save m   4    .
But how do you know which films you can w   5   ?The US has a rating(分级) system.If a movie is
rated G, it means General Audience, and a   6   can see it. PG means Parental Guidance(家长指导).
That means you need your p   7   to go with you, if you’re really young. A PG-13 movie means you h   8   to watch it with your parents if you’re y   9   than 13 years old. And a   10    R rated movie means unless you’re o   11   than 17, you need your parents to be w   12   you.

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