请写出一个有一根为0，另一个根不为0的一元二次方程：______．_爱下问搜题

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问题填空题

请写出一个有一根为0，另一个根不为0的一元二次方程：______．

答案

一根为0，另一个根不为0，设是5，则方程是x（x-5）=0．即x²-5x=0，本题答案不唯一．

填空题

服务质量的特性具体表现为“五感”，分别指：舒适感、（）、亲切感、安全感、物有所值感。

完形填空

完型填空。从题后所给的A.B.C.D四个选项中选出符合题意的最佳选项。
Long ago there was a poor farmer in Russia. He had been very 1__ with everything he had. However, when he found his elder brother was __2__ than him, he felt disappointed. So he 3__ hard about how he could also be richer. Finally he got an idea. He started to spend less money on food and clothes to __4___ some money to buy more land. Once he had enough money, he started __5_for land.
He6__ that on the neighboring land, there were some nomads living there. He bought some gifts and went to ___7_ their head. He presented the gifts to the head and told him the 8__ of his visit. The head welcomed him, accepted the gifts and agreed to his 9_ to get the land. The head told him that he could have the land _10__ giving him anything. He can take as much land as he could _11 by walking through the land before sunset. He should start in the morning and whatever distance he could travel during the 12_____, he could have it.
The farmer became very 13___when he heard this offer. Now he could have lots of _14__ without paying anything. He came __15 the next morning and started running, not walking, 16_ he could cover the largest area. To reach his goal, he neither ate food, nor drank water, nor had any rest. He just continued___17_. Without eating, or drinking, or resting he just got very 18__.When he came back to the head in the evening, he 19__ right on the spot. Sadly his son buried him in a piece of land about 6×4feet.
Don’t be greedy or you will __20 everything finally.