题目

根据首字母提示，拼写单词，完成短文。 Tu Youyou, an 84-year-old researcher at the China Academy ofTraditional Chinese Medicine, was given the Nobel Prize in Medicine on Oct 5. Sheis the f Chinese citizen who has w a Nobel Prize in science. Tu d a new drug for malaria. The disease infects around 200 millionpeople and kills about half a million people each year. In the late 1960s, Tu andher workmates joined a government p to find a new malaria drug. In 1971, after f more than 190 times, Tu f made an extract called qinghaosuthat was effective a malaria. It has s millions of live老师给出一个函数,甲,乙,丙,丁四位同学各指出这个函数的一个性质: 甲:函数的图像不经过第三象限；乙：函数的图像经过第一象限； 丙：当x＜2时，y随x的增大而减小；丁：当x＜2时，y＞0； 已知这四位同学叙述都正确，请构造出满足上述所有性质的一个函数___________________。