1.Ultra-sonic sound is __ is inaudible to human ear.
1.Ultra-sonic sound is __ is inaudible to human ear.
A.such as B.the same as C.which D.that
2.A magnetic field may be represented in __ manner __ an electric field.A.such … as B.the same … as C.such … that D.the same … which
3.We’ve all heard of Thomas Edison,__ invented the electric litht and many other things.
A.the man who B.that C.which D.a man who
4.That tree,__ branches are almost bare,is very old.
A.whose B.of which C.in which D.on which