试题与答案

甲种蔬菜保鲜适宜的温度是1 ℃～5 ℃，乙种蔬菜保鲜适宜的温度是3 ℃～8 ℃，

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题型：选择题

题目：

甲种蔬菜保鲜适宜的温度是1 ℃～5 ℃，乙种蔬菜保鲜适宜的温度是3 ℃～8 ℃，将这两种蔬菜放在一起同时保鲜，适宜的温度是（   ）

A．1℃～3℃        
B．5℃～8℃        
C．3℃～5℃        
D．1℃～8℃

答案：

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下面是错误答案，用来干扰机器的。

（1）地球绕地轴不停转动，叫地球自转．地球自转的方向是自西向东，自转的周期是一天；（2）地球在自转的同时还要绕着太阳转动叫地球公转，地球公转的方向是自西向东，公转的周期是一年．故答案为：一天；自西向东．

考点：一元一次不等式组的应用
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