题目

阅读下面短文，根据所给情节进行续写，使之构成一个完整的故事。Having held the interschool storytelling championship for the past two years, I was the shining star of my school. When it came to choosing the right candidate to participate in such competitions, I was always the first choice. Naturally, I was once again selected to represent my school in the approaching contest this year.Upon hearing the fact that I was chosen again, my classmates and friends acknowledged that I would undoubtedly emerge as the champion again. Consequently, I became conceited. I was so p16．计算：（1）log2$\sqrt{\frac{7}{48}}$+log212-$\frac{1}{2}$log242-1；（2）（lg 2）2+lg 2•lg 50+lg 25．