某几何体的主视图与俯视图如图所示，左视图与主视图相同，且图中的四边形都是边长为2的正方形，两条虚线互相垂直，则该几何体的体积是(      )

用括号内所给单词的适当形式填空,必要时可加助动词或情态动词。
Waste can be seen everywhere in our school. Some students ask for more food than they can eat and others often forget____ (turn)off the lights when they leave the classroom. They say they can afford these things. But I____ (not agree)with them.Waste can bring a lot of problems. Although China is rich in some resources (资源), we're short of others, for example, fresh water(淡水). It____ (report) that we will have no coal(煤) or oil to use in 100 years. So if we go on____ (waste) our resources,what can we use in the future? Think about it. I think we should
say to the students who waste things every day. Everybody____ (stop) wasting as soon as possible.
In our everyday life, we can do many things____ (prevent) waste from happening, turn off the water taps(龙头) when we____ (finish) washing, turn off the lights when we leave the classroom, try not to order more food than we need, and so on. Little by little, everything will be changed. Waste can be stopped one day if we do our best.

下列各句中划线成语的使用，全都正确的一项是（    ）

①台砜刚过。经受了暴风雨洗礼的玉山风景更加秀美，成千上万的市民和外地游客纷至沓来地涌入景区，饱览胜景。

②电影《捉妖记》既有武道与术法的碰撞，又有爱情与宿命的纠结，多了些迷离幻境的诱惑，少了些清规戒律的约束。

③欲了解中国文明。两千年看西安，一千年看北京，一百年看上海。要了解旧上海，就一定要读那些包罗万象的小报。

④春天的运河古城，花红柳绿，生机盎然，游人漫步在充满诗情画意的河畔，含英咀华，欣赏着粼粼水波、烟柳画桥。

⑤身处春秋鼎盛的时代，我们这些身强体壮的青年学生应该奋发有为，积极向上，刻苦学习，为国家和社会多作贡献。

⑥三毛的人生是丰富多彩的，成就独特，卓尔不群，她对情感、自由和人性美的强烈追求，在作品中淋漓尽致地显露。