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  3. Much unfriendly feeling towards computers has based on the fear ofwidesprea

Much unfriendly feeling towards computers has based on the fear ofwidesprea

游客2023-07-22  52
问题     Much unfriendly feeling towards computers has based on the fear of
widespread unemployment resulting from their introduction.
    Computers are often used as part of automated production systems
required a least possible number of operators, causing the loss of many      【M1】 ______
jobs. This has been happened, for example, in many steelworks.               【M2】 ______
    On the other hand, computers does create jobs. They are more skilled     【M3】 ______
and better paid, though less in number than those they replaced. Many        【M4】 ______
activities can not continue in their present form without computers, no      【M5】 ______
matter how many people are employed. Examples is the check clearing(票据     【M6】 ______
交换)system of major banks and the weather forecasting system.
    When a firm introduces computers, few people are usually employed        【M7】 ______
in key posts(such as jobs of operation managers)while other staff is re      【M8】 ______
trained as operators, programmers, data preparation staff. After the new
system have settled down, people in non-computer jobs are not always         【M9】 ______
replaced.
    When they leave, resulting to a decrease in the number of employees.     【M10】 ______
This decrease is sometimes balanced by a substantial increase in the activity
of the firm, resulting from the introduction of computers. [br] 【M2】
选项
答案 has been happened应改为has happened
解析 因为happen为不及物动词，不能用于被动语态。
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