What do you read when you are travelling by train or bus? What are other people reading? Perhaps a woman sitting near you is reading a love story. A man is reading a serious biography(自传) about a president. And there's a student reading an English textbook.

    What do their choices(选择) say about them? Do you think you can know them by what they are reading? I have got to tell you that your feelings of them may be quite wrong. The woman reading the love story could be a lawyer. She just wants a light read to take her mind off work. The man reading the biography wants you to think that he is very clever. The student reading the textbook isn't a student at all. She's an English teacher.

    Publishers(出版商) know that some people care what they read on trains or buses and so they put out different types of covers. For example， books about Harry Potter have a cartoon cover for young readers and then another more serious cover for grown—ups.

    So next time you are on a train， look around and see what other people are reading， but don't jump to any conclusions(结论). You will be wrong maybe.

Here is a sentence that you could say， “Don't judge（判断） a book by its cover”.

铁丝在空气中灼热发红，但不能燃烧，而在纯氧中却能燃烧，这一事实与下列哪一因素关系最密切          （）                                           

如图是细胞的部分生命活动和显微镜结构示意图，请根据图回答问题：

近年来，我国爆出的这些五花八门的奇葩证明让人哭笑不得：“买房被要求证明无犯罪前科”“办护照被要求开点痣证明”“银行取钱被要求证明你妈是你妈”……。消除奇葩证明，政府应（    ）

①推进简政放权，依法规范权力运行

②借助网络实现信息共享、部门互通

③完善公共服务体系，避免权力缺位

④切实转变职能，重视服务而非管理

（2015•甘孜州）如图，△ABC为等边三角形，以边BC为直径的半圆与边AB，AC分别交于D，F两点，过点D作DE⊥AC，垂足为点E．