The text “Climate Change: No Eden, No Apocalypse” suggests that climate change will bring us ultimate destruction, but also that we can somehow “stop” climate change to take us back to some fantasy world of perfection.（ ）

$\int_{0}^{\frac{\text{ }\!\!\pi\!\!\text{ }}{4}}{[\cos (2t)\mathbf{i}+\sin (2t)\mathbf{j}+t\sin t\mathbf{k}]}\operatorname{dt}=$( ) 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

Conversion can change a word’s form into another so as to make the text more_____. A.translator-accessible B.author-accessible C.reader-accessible </p></p>

(In the text “What Can I Do to Extend the Length of My Life?”) (Book 1, Unit 3) The hedging language can be used to __________ a message, as it is not actually presented as a fact. A: “soften” B: “strengthen” C: “change” D: “retain”

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: ${{\text{C}}_{1}}x+{{\text{C}}_{2}}{{e}^{x}}-{{x}^{2}}+1$

At the end of the text, the author uses trees as an example to show that _____. A: a clean environment is very important to us B: everything in the world is precious C: change takes place very fast D: change takes place very slowly

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

文本框的默认事件是 A: Text1_Click() B: Text1_Change()

当文本框的Text属性发生改变时，就触发（ ）事件。 A: setfocus B: click C: Dblclick D: change