根据句意和首字母提示完成下列句子。There are sixty m____ in an hour.He is ill, and his i____ makes us feel sad.A lot of t____ are visiting the Great Wall, so it is very crowded.Good food and e____ help me to study better.It is n____ to eat a balanced diet.
请将下列短文中带点的部分,用恰当的化学用语填写在横线上:
太阳镜具有保护眼睛的功能.它的镜脚一般是由塑料(其中含有____ )制成的,玻璃镜片的主要成分是二氧化硅____ ,且变色玻璃中含有银离子____ ,铜制镜框使用时间过长会生成铜绿____ .铜绿中氢氧根离子的化合价显﹣l价.