有些鸟类在迁徙途中休息时,总有一些“站岗放哨”的鸟,当发现敌害时,它们会大声鸣叫,或者狂奔,或者使劲扇动翼,做起飞状,使群体迅速做出防御敌害的准备或者快速逃生。

如图（1），∠AOB=45°，点P、Q分别是边OA，OB上的两点，且OP=2cm．将∠O沿PQ折叠，点O落在平面内点C处．

选词填空。

    My favourite TV programme is a reality show called Survivor(《幸存者》). It isn't on TV at the moment ____  it was on last year.

    In the show, two teams of people are taken to a(an) ____ . All of them have to sleep ____  because there aren't any houses or hotels. They usually choose ____ really useful like a tooth brush since they can only ____ one thing with them. The people also have to find food and they spend a lot of time fishing and collecting fruits from the ____ . Every week one person has to____ . At the end, there are only two people on the island and one of them is chosen ____ the winner.

    I really like Survivor because it's very ____  and the people have to do things like hunting for food. I really ____  myself when I watch it. I don't want to be on the show, however, I like 1iving in a house!

—It's a long story, but you will find that there are few new words in it .
—Good!        it will be too hard for children. 

下列各句中划线词语的使用，恰当的两项是（    ）