一个项目具有一个项目主管，一个项目主管可管理多个项目，则实体_爱下问搜题

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问题填空题

一个项目具有一个项目主管，一个项目主管可管理多个项目，则实体“项目主管”与实体“项目”的联系属于______的联系。

答案

参考答案：一对多(或1:N)

解析：两个实体集间的联系实际上是实体集间的函数关系，这种函数关系可以有3种，即一对一(1:1)的联系、一对多(1:N)或多对一(N:1)的联系和多对多(N:N)的联系。

选择题

太阳直射回归线时，对我们这里的昼夜和季节进行描述，下列说法正确的是[ ]

A、昼夜等长

B、昼夜不等长

C、是秋分

D、是冬至

完形填空

完形填空（共20小题：每小题1. 5分，满分30分）
In a land far away, once upon a time there was great poverty （贫困）,and only the rich could manage without great _26_. Three of those rich men and their servants were_27_together on a road when they came to a very_28_village.
The first could not stand seeing the poverty, _29 he took all the gold and jewels from his wagons (四轮载重马车) and shared _30 out among the villagers. He wished them all the best of luck, and he left.
The second rich man ,seeing the _31 situation, stopped for a short time and gave _32 all his food and drink, since he _33 see that money would be of little _34 to them. He made sure that they each _35   their fair share and would have enough food to _36   for some time. Then, he left.
The third rich man, on seeing such poverty, _37   and went straight through the _38 without stopping. The two other rich men saw this from a distance and commented（评论） with each other_39   the third rich man lacked sympathy（同情）. It was _40   that they themselves had been there to offer help.
However, three days later, they   41 the third rich man, who was coming in the opposite direction. He was 42 travelling quickly, but his wagons, 43 the gold and valuables they had been 44 ,were now full of farming tools and bags of 45 .He was rushing back to help them out of poverty.

B．expectations

A．the villagers

B．his servants

A．turned back