There is no denying that waste is a common phenomenon on campus nowadays. As a developing country and a nation with so long a history, our young people should realize the serious realities of our natural materials and economical resources. You are to write a 400-word composition to discuss this issue.
In the first part of your writing you should present your thesis statement, and in the second part you should support the thesis statement with appropriate details. In the last part you should bring what you have written to a natural conclusion with a summary.
Marks will be awarded for content, organization, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.

填空题and：

单项选择题The author implies that a major element of the satirist’ s art is the satirist’ s ______.

填空题lecturer’s enthusiasm

单项选择题According to the passage, the rise of gold price ______.

问答题Youth is not a time of life; it is a state of mind. It is not a matter of rosy cheeks, red lips and supple knees. It is a matter of the will, a quality of the imagination, vigor of the emotions; it is the freshness of the deep spring of life. Youth means a temperamental predominance of courage over timidity, of the appetite for adventure over the love of ease. This often exists in a man of 60, more than a boy of 20. Nobody grows merely by the number of years; we grow old by deserting our ideas. Years may wrinkle the skin, but to give up enthusiasm wrinkles the soul. Worry, fear, self-distrust bows the heart and turns the spirit back to dust. Whether 60 or 16, there is in every human being’s heart the lure of wonders, the unfailing childlike appetite of what’s next and the joy of the game of living. In the center of your heart, and my heart there is a wireless station; so long as it receives messages of beauty, hope cheer, courage and power from men and from infinite, so long as you are young.