甚至什么
welcome back to the david back-bencher please remember as the holiday shopping season is getting into full swing if you do any amazon dot com shopping in the u_s_ u_k_ or anywhere in europe please...
let's go present our bomb up after the fiscal cliff deal has been signed well is no let us know uh... as always he had no choice but next time it'll be much better first no choice the...
Only a few elements can be permanent magnets - iron is one. Copper is not. But if you pass an electric current through any metal it becomes a magnet - an electromagnet. But how does this work? Well...
