题目内容

未经（）合格的从业人员，不得上岗作业。

A. 基础知识教育
B. 安全生产教育和培训
C. 技术培训
D. 法律法规教育

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In China, the social and financial pressure on parents is on the rise, particularly on mothers. With many young parents too busy with their paid jobs, children are often left to their grandparents. Writing an essay of about 400 words on the following topic, expressing your point of view.
GRANDPARENTS RAISING GRANDCHILDREN
In the first part of your writing you should present your thesis statement, and in the second part you should support, the thesis statement with appropriate details. In the last part you should bring what. you have written to a natural conclusion or a summary.
Marks will be awarded for content, organisation, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.
Write your composition on ANSWER SHEET FOUR.

1台局部通风机最多只能向2个掘进工作面供风。()