“哀民生之多艰”、“风声鹤唳，草木皆兵”、“怒发冲冠”、“漫卷诗书喜欲狂”所表现的情绪顺次是（ ）
A：喜、怒、哀、惧
B：哀、喜、惧、怒
C：哀、惧、怒、喜
D：惧、喜、哀、怒
A：Wow! What a great model plane! Is it yours，Jack?
B：Yes，it's mine．
A：____
B：For two days．
B：At Green Store。
B：It's six dollars．
B：I've given it to Peter．
B：Because he likes it a lot．
A．How much is it?
B．Why did you give it to Peter?
C．How long have you had it?
D．Where did you buy it?
E．Why are you selling it?
F．Where's your old model plane?
G．Can I have a look at your old model plane?
马克思主义哲学的产生实现了哲学史上的伟大变革。它第一次实现了（ ）。
①唯物主义与辩证法的有机统一
②唯物辩证的自然观与唯物辩证的历史观的有机统一
③世界观和方法论的统一
④实践基础上的科学性和革命性的统一
下列关于草履虫的叙述中，不正确的是（ ）
