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问题 单项选择题

RIP是一种基于 （24） 的路由协议，RIP规定，通路上经过的最大路由器数是（25） 。

A．链路状态算法

B．距离矢量算法

C．最短路径算法

D．最小费用算法

答案

参考答案：B

听力题

It was Sunday morning in late October, about four months after Tess Durbeyfield’s arrival at the village. Some weeks ___16___ (pass) since the night carriage ride with d’Urberville in the forest. Tess was carrying a heavy basket filled with clothes. Occasionally she stopped ___17___ (rest) by some gate or post; and then, went steadily on again. She followed the same road on ___18___ d’Urberville had driven so wildly that night in June. When she reached the top she gazed ___19___ the familiar green world beyond. It was always beautiful from here; it was ___20___ (terrible) beautiful to Tess today, for, ___21___ her eyes last fell upon it, she had learnt that in even the most beautiful surroundings there may be danger. Her view of life had been totally changed for her by the lesson.

She had slipped away from d’Urberville’s farm ___22___ all the people were in bed, though her going would not be prevented now. Tess had thought, “I shan’t come back,” and was sure of her ___23___ (decide). Now she did not look back, ___24___ slowly walked along the narrow lane. ___25___ was still early and there was not a single person in sight.

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单项选择题

能升华的成分是（）

A．植物醇

B．维生素A

C．龙胆苦苷

D．樟脑

E．柠檬烯
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