我认为不会产生什么好的效果，因为干物质无法与冰粒起任何明显的反应。
I don't think there will be good results - dry substances are not able to have any noticeable reaction with ice particles.
开始并没有什么效果，只是控制他不和别人说话，课堂秩序好一点。
Starts certainly not to have what effect, only is controls him not with others speech, classroom order good.
什么药对近视效果好并且副作用比较小?。
What medicine is good to myopic effect and is side effect less?
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