練習(xí)材料:L20-1:Pioneerpilots In 1908 Lord Northcliffe offered a prize of $1,...
練習(xí)材料:L19-2:A very dear cat Mrs. Ramsay was instructed to place the money...
L19-1:A very dear cat Kidnappers are rarely interested in animals, but t...
練習(xí)材料: L18-2:Electric currents in modern art Oddly shaped forms that are ...
練習(xí)材料: L18-1:Electric currents in modern art Modern sculpture rarely surp...
L17-2:The longest suspension bridge in the world Two great towers suppor...
L17-1:The longest suspension bridge in the world Verrazano, an Italian a...
L16-2:Mary had a little lamb After telling several of his friends about ...
L16-1:Mary had a little lamb MaryandherhusbandDimitrilivedinthetinyvilla...