依次填入下列各句横线处的词语，最恰当的一组是（）
（1）一方面要供认我自己的罪过，一方面也要为我自己           。
（2）1978年，由华盛顿主持的制宪会议成功地          了美国宪法。
（3）两汉时期出现了叫“赋”的散文，多用对句，以后           为骈文，通篇都用对句，风格华丽优美。

已知函数f（x）=$\frac{1-a+\ln x}{x}$在x=e上取得极值，a，t∈R，且t＞0．

（Ⅰ）求a的值；

（Ⅱ）求函数g（x）=（x﹣1）•f（x）在（0，t上的最小值；

（Ⅲ）证明：对任意的x₁，x₂∈（$\frac{1}{t}$，+∞），且x₁≠x₂，都$\frac{x_{1}f\left(x_1\right)-x_{2}f\left(x_2\right)}{x_1-x_2}$＜t．

阅读下面的诗歌，完成题目。

登鹳雀楼

王之涣

白日依山尽，黄河入海流。

欲穷千里目，更上一层楼。

预防传染病有三个环节，在实际生活中，有效预防某种传染病应做到（   ）

增加：在缺词处加一个漏字符号( $\wedge$ )，并在其下面写出该加的词。

删除：把多余的词用(＼)划掉。

修改：在错的词下画一横线，并在该词下面写出修改后的词。

注意：1）每处错误及其修改均仅限一词；

2）只允许修改10处，多者（从第11处起）不计分。

    As it is known to us, fewer and fewer students do sports regularly, what makes them weak and easily tiring. There are many reasons about  this. First of all, some of the students complained that they have too many homework, resulting in less time to take exercise. Beside, some of them think that it is very difficulty  for them to keep doing exercise, because it is a very hard thing. Because lack of physical activities, many students are in poorly health. I suggested that our school must take measures to encourage more students to take part in sports. For us students, no matter what busy we are, it is necessary to spare any time to do exercise.