公民在“行使自由和权利的时候，不得损害国家的、社会的、集体的利益和其他公民的合法的自由和权利”，这要求公民（    ）

①不得以非法手段谋取权利                               ②不得超过法律许可的范围 

③可以采取任何方式行使自由的自由权利       ④要依法维护自己的正当权益

 鱼儿不停地用口吞水，再从鳃孔把水排出，其意义是（　　）

下列光现象中，能说明光沿直线传播的是（　　）

阅读短文，判断正误。对的写正确，错的写错误。

Ken: Today is Sue's birthday. Let's buy a gift for her.

Ann: OK. Let's go.

Ken：What about these sweatpants?

Ann: Oh, no. They aren't her style. She likes cool clothes.

Ken: Oh, yes. She likes music. This is the latest CD. Does she like this one?

Ann: She likes pop music, but she prefers Jazz music. This one is OK.

Ken: How much is it?

Assistant: $13.

Ken: We'll take it. Thank you.

Assistant: That's all right. Bye!