问题详情

We can infer from Paragraph 1 that______.

A．mining accidents in Chile"s Atacama Desert claimed 33 lives last year

B．there has been much improvement in Chile"s mining safety since last year

C．Chilean government has closed quite a number of poorly-operated mines

D．Chilean parliament has passed a draft bill on mining regulations

请帮忙给出正确答案和分析，谢谢！