Activity: Please write down the subtitle in the Text C and make clear the structure in the text. Text C Verbal Communication Style

Which of the following statements about a coherent text is NOT right? A: There is a clear thesis, which is the main idea of the text. B: Each part of the text has a topic sentence. C: There is a clear progression of ideas throughout the text. D: There is no logical between different parts of the text.

Please write down the subtitle in theText A and make clear the structure in the text. Text A Acculturation 1. _________________; 2. _______________; 3. _____________.

$\int_{0}^{\frac{\text{ }\!\!\pi\!\!\text{ }}{4}}{[\cos (2t)\mathbf{i}+\sin (2t)\mathbf{j}+t\sin t\mathbf{k}]}\operatorname{dt}=$( ) A: $(\frac{1}{2},\frac{1}{2},\frac{4-\text{ }\!\!\pi\!\!\text{ }}{4\sqrt{2}})$ B: $(1,\frac{1}{2},\frac{4-\text{ }\!\!\pi\!\!\text{ }}{4\sqrt{2}})$ C: $(\frac{1}{2},1,\frac{4-\text{ }\!\!\pi\!\!\text{ }}{4\sqrt{2}})$ D: $(1,1,\frac{4-\text{ }\!\!\pi\!\!\text{ }}{4\sqrt{2}})$

Text 1

查看如下 html 代码： <div style="float:left;">div text</div> <p style="clear:left;">p text</p> 此代码在页面上的显示效果为（）

已知齐次方程$(x-1){{y}^{''}}-x{{y}^{'}}+y=0$的通解为$Y={{C}_{1}}x+{{C}_{2}}{{e}^{x}}$，则方程$(x-1){{y}^{''}}-x{{y}^{'}}+y={{(x-1)}^{2}}$的通解是( ) A: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-({{x}^{2}}+1)$ B: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-({{x}^{3}}+1)$ C: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-{{x}^{2}}$ D: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-{{x}^{2}}+1$

Skim the text and answer the following questions. 1) What type of writing is the text?

Part 1 ： The text begins with an _________.

Fast reading text 1