随着私家车越来越多，乱停乱放给人们带来诸多不便，小丁同学用小刀在违规停放的车辆上划了一道，以此来教训车主。对此，正确的评价是（    ）

①车主乱停乱放是违背公德的表现                                             ②小丁的行为是正义的，有利于惩戒此类违规行为

③小丁具有强烈的责任意识，能做到对他人、社会负责         ④解决办法很多，做事不可任性

设直线l与抛物线y²=4x相交于A、B两点，与圆（x﹣5）²+y²=r²（r＞0）相切于点M，且M为线段AB的中点，若这样的直线l恰有4条，则r的取值范围是（　　）

①碰钉子____     A．因别人的才能、声誉或地位强于自己而心存怨恨。

②摔跟头____     B．指看到别人取得好成绩非常羡慕而忌妒。

③红眼病____     C．比喻在生活中遇到的各种困难和挫折。

④嫉妒____       D．比喻遭到拒绝或受到斥责。

A: Hi, Bill! Are you listening to MP4 again?

B: Yes, Tom. I'll never be tired of it.

A:____

B: I like music that I can sing along with.____

A: I prefer music that is quiet and gentle. ____

B: Oh, Jolin's songs have great lyrics. By the way, which group is your favorite?

A:____I prefer groups that can play different kinds of music.

B :____I also like Twins best. They take after each other, but the), are not really twins.

A: Really? Let's search the information on the Internet.