如图，将直线l₁沿着AB的方向平移得到直线l₂，若∠1=50°，则∠2的度数是（   ）

语法填空

Wife: What do you want to do tonight?

Husband: How about ____ (go) to the movies? I should be home from work at 5: 20. Then we can go out and eat and then to the movies.

Wife: ____ do you want to see?

Husband: There is a good ____ at the cinema. Let's see that.

Wife: It ____ (start) at 6: 30, I don't think we can get there in time to see the beginning. How about ____ one at the New State? That starts at 7: 00.

Husband: No. I don't like Robert Redford. You know that. Maybe we should just stay home ____ watch TV. Then we can go out Friday night.

Wife: Did you forget that Ed and Jean____(come) to dinner that night?

Husband: OK. I hope Saturday is all right. Do we have anything ____ (plan) for then?

Wife: No, Saturday is fine. And there's a good movie 3. ____ starts on Saturday too.

Husband: Good. I'm going to play tennis Saturday morning but I'll be home by 2: 00. Then we can go out for a big dinner and to the movie, ____ nothing else comes up.

Wife: I'm sure we'll be able to go.

   $\begin{array}{c}{N}_2\left(g\right)+2O_2\left(g\right)═2N{O}_2\left(g\right)；△H=+67.7kJ/mol\\ N_2{H}_4\left(g\right)+O_2\left(g\right)═N_2\left(g\right)+2H_{2}O\left(g\right)；△H=-534kJ/mol\end{array}$

下列判断正确的是（   ）

我国自2015年1月1日起，对地级及以上城市执行空气质量监测新标准，监测数据包括可吸入颗粒（PM10）、细微粒物（PM2.5）、SO₂、NO₂、O₃和CO等6项指标．某同学对SO₂、NO₂、O₃和CO四种物质的认识，不正确的是（　　）​

《呼兰河传》是一部充满____、诗趣和灵感的“ ____ ”长篇小说。这部小说的作者是____，茅盾评价《呼兰河传》，是“一篇叙事诗，一幅多彩的风土画，一串凄婉的歌谣”。