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问题 单项选择题

恢复救援照明供电应按（）步骤完成。①选取稳定电源方案并实施。以事故点为中心，找到最近箱变，接入事故电缆，迅速送至各需要照明的位置②保证良好的照明。根据事故救援总指挥意见和现场照明需要，及时进行照明器具和照度调整，保证良好的照度效果③启用带电池的事故照明灯进行照明

A、①②③

B、③①②

C、②①③

D、①②③

答案

参考答案：B

单项选择题

(五)


According to a famous optical expert, Alexander, who recently visited Shanghai, the developed countries in Europe and America have made rules that children must wear resinous glasses instead of the traditional glasses made of glass. This is because the glass glasses are more likely to do harm to children’s eyesight.
Alexander pointed out, wearing the right glasses as soon as possible is still the best way to cure and put right children’s eyesight problems.
In America and Japan the resinous glasses have taken up 80 percent of the glasses market. And some European countries and America have made it a law that children, teenagers and drivers must wear resinous glasses. Now, about 10 million children in China have different eyesight problems and they need timely treatment.
But still, too many parents are buying the traditional glass glasses for their children. This is mainly because many parents know little or nothing about the good points of the resinous glasses. Besides, the price for the new glasses is a little higher than the traditional ones.

This news article mainly wants to tell us ______.

A．Alexander visited China and introduced a new type of glasses

B．we should wear resinous glasses instead of glass glasses

C．resinous glasses are popular in Europe and America

D．glasses can be made of other materials instead of glass
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