电工、电气焊工特种作业人员必须具有（）及以上文化程度。
A、初中
B、高中
C、中专
参考答案：A
.
Jane has been working for three months without going on holiday . .
She should have taken a vacation ,but she couldn’t ____the time.
A． afford
B．spend
C．take
D．waste
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