一点沿直线运动,如果由始点起经过t秒后的距离为$s=\frac{1}{4}{t}^4-\frac{5}{3}{t}^3+2t^2$，那么速度为零的时刻是                （  ）

Who says honesty (诚实) is dead? Last Tuesday morning Alan Reed, a student at Claremont College here, was getting1money out of the bank. He wanted to have 50 dollars and the teller (出纳)2him five twenties instead of five tens. For a few seconds, Alan wondered (疑惑)3to do it. Should he give the extra money back? Keep it?4 he kept it, he could buy several new CDs, or he could take his friend Simon to a big dinner. 5no one would ever notice (注意). But then he 6 the teller. She was a middle-aged woman with a sweet face, and she reminded(提醒) him of his mother. She had been nice to him. Then he thought that there were probably exact (精确的) 7kept of  how much money was paid out, and the8would probably get in trouble. 9of all, Alan felt he would probably feel10about keeping the extra money. So Alan gave back the money.  

下列加下划线的文言词语解释完全正确的一项是（    ）

【旅游地理】

下图为云南省精华旅游线路示意图，游览线路次序为昆明一景洪一保山一大理一一丽江～香格里拉～德钦一（返回）昆明，本线路所游览的景点包括世界遗产2处（全省共3处），国家级风景名胜区7处（全省共12处），云南省重点景区8处（全省共9处）。读图文资料回答问题。

请对该旅游线路做出评价。