“雄赳赳，气昂昂，跨过鸭绿江……”，一首荡气回肠的歌曲把我们带回了那个硝烟弥漫的战场。对于这场战争的结局，你写篇社论，你会写（    ）

①粉碎了美国为首的帝国主义国家的侵略阴谋②保卫了中朝两国的独立和安全③提高了我国的国际威望④显示了美国的实力

“当我受到委屈时，会痛快地哭一场”。这是采用何种方法来调节自己不良的情绪（     ）

如图，在方格纸上建立的平面直角坐标系中，将△ABO绕点O按顺时针方向旋转90°，得△A′B′O′，则点A′的坐标为（　　）

阅读理解，判断正误。

Bill and Ben are shopping.

Bill: There is a store. Let's go in.

Ben: Let's go.

Assistant: Can I help you?

Bill: Yes, do you have any shoes?

Assistant: Yes, we do. What size do you want?

Bill: Size 21, please.

Assistant: Here you are.

Bill: Oh, this shoe is just right for my left foot. But this one is too big for my right foot.

Assistant: You can try this pair on. They are size 20.

Bill: Oh, this time my right foot is all right. But this shoe is too small for my left foot.

Assistant: What size do you want?

Bill: I don't know. Can you give me an idea?