反应2A(g)＋B(g)2C(g)；△H＞0。下列反应条件有利于生成C的是（  ）

原云南大学在校学生马加爵因小事连续杀死四名室友，手段极为残忍，最后被法院以故意杀人罪判处死刑，剥夺政治权利终生。自觉履行法定义务是公民意识的重要表现。马加爵的事件给了我们以下启示（      ）​

阅读下列短文，从每小题A、B、C、D四个选项中选出一个最佳答案。

Every year at our school, we have a special day called International Day (国际日). It is for students to learn about different cultures (文化) from different countries. On this day, each class must tell other classes about a different country. Of course you will see many dances and different foods.

If you visit the classroom of Japan, you can play the games Japanese children play. You also have some special Japanese foods. In the classroom of Mexico (墨西哥), there are tomalleys (龙虾肝) and chips to eat.

    In the afternoon, all the students, teachers and parents watch the dances. There are lots of dances.

    These dances are beautiful. People enjoy the shows.

    I enjoy International Day very much.

如图所示的实验操作，正确的是（　　）