新标准英语b4m8u1_the_train_is_going_up_a_hill.ppt
插图素材: landscape cartoon, illustration. river, sun, hill.
green hill landscape with trees meadow cloud and sun on blue sky
hill 小山;山丘 in the hill 在山上 there is forest in the
a cartoon spooky house on top of a hill with a full moon in the