ÿþ<font color="ff1100">Ban dang tron gio kiem tra trac nghiem ma khong biet chon dap an nao?</font> <script> var cauhoi=prompt("Nhap cau hoi :","Dung dich etylamin tac dung duoc voi dung dich nao sau day ?"); var hoi=cauhoi.length; while(hoi>5){ hoi=hoi%4; } var kq= new Array("A","B","C","D"); document.write("<div align='center' >Hay khoanh dap an :<font color='ff1100'>"); document.write(kq[hoi]+"</font>"); </script> <br>Tip:Dap an chi mang tinh tuong doi,khong chiu trach nhiem neu sai.<a href="http://hack4you.info/html/tracnghiem.xml">Cau hoi moi</a>|<a href="http://hack4you.info">Trang chu</a>Code by Hac4You.InFo Mr.Green