按照企业统计特征进行市场细分的标准主要有（）。A．民族 B．产_爱下问搜题

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问题多项选择题

按照企业统计特征进行市场细分的标准主要有（）。

A．民族

B．产品类别

C．企业规模

D．企业地域

答案

参考答案：B, C, D

完形填空

Until 1954 it was thought that no man could run one mile in less than four minutes. As years 31 , the record came closer and closer to four minutes and Roger Bannister, a young English    32  , began to believe he might  33 this almost magic barrier.
It was a cold afternoon on May 6th, 1954, when Bannister knew he had a   34  chance. Bannister had been  35 hard and was very fit, but the weather conditions were a real 36 to him. Describing the   37   later, Bannister said,” On the way to the track the wind blew strongly. As I 38 for the start I glanced at the flag. It moved 39 now. This was the moment when I made my decision.”
“The gun fired. My legs 40 to meet no resistance, as if I was 41 forward by some unknown force. The noise from the faithful 42 gave me greater strength. I felt the 43 of a lifetimes had come.”
“I was driven on by a  44 of fear and pride. My body had long since used up all its energy   45   it went on running just the same. This was the critical moment when my legs were strong enough to carry me over the last few yards as they 46 could have done in previous years. When I leapt at（冲向）the    47 tape, I fell, almost   48 .
“I knew I had done it, even before I 49 the time. The announcement came. ‘Result of the one mile…Time, three minutes…’the test was 50 in the noise of excitement.”

A．passed along

B．passed down

A．concentration

C．combination

D．classification

A．unconcerned

B．unconscious

填空题

中和池排水PH值控制为（）。