Does anyone know in adobe photoshop , digital design class , how to make a smart object and copy it to another page!

I suppose you by page, mean file and if that is the case you can right-click the smart object, press duplicate and in the drop-down menu called 'Destinaton' choose where you want you copy to be placed. You then just choose the file(page) you want it to be transferred to

Answer the above statement is (true);

Answerinfrared thermometers, protective clothing,and improved prosthetic limbs;