下面的图形是轴对称图形的画“√”，不是的画“×”，并画出轴对称图形的对称轴。

2017年1月，十八届中央纪委七次全会公报提出：我国反腐败斗争压倒性态势已经形成，2017年仍将保持反腐高压态势，力度不减、节奏不变。公报强调，民心是最大的政治，要把管党治党政治责任落实到基层。***保持反腐高压态势，旨在（    ）

①全面从严治党，保持党的先进性和纯洁性

②加强党的建设，厚植党执政的政治基础

③确立党的执政地位，充分发挥党的领导核心作用

④完善党的执政方式，彰显党治国理政的智慧和能力

阅读理解

A

     Here are some English study skills for beginners.

★Listening

     Listening is a great way to improve your pronunciation and intonation (语调). You can start by listening to short stories for children because they are usually easy.

★Reading

     Reading is a good way to help you learn new words. And it will also help you learn English grammar. Children’s books are great for beginners.

★Vocabulary

     When you come across new words in the reading, write them down in your notebook. You can write down the translation in your native language to help you understand.

★Speaking

     While doing your reading exercises, read them aloud. You can also look for some articles (文章) on the Internet to read.

      Learning any language needs practice — lots of practice. You don’t have to spend hours studying each day; just 30 minutes a day for four or five days a week will help you improve it.

在这些过程中，发生气体交换的有(   )

选出下列句子中没有语病的一项。（      ）