外研八级下学期课件unit 2.pdf
文本预览下载声明
spaceshipastronaut
spacetravel
ScientistshavesentspaceshiptoMars.
Thejourneyhastakenseveralmonths.
Astronautshavealreadybeentothe
moon.
NoonehasbeentoMarsyet,because
Marsisveryfaraway,muchfarther
thanthemoon.
L
显示全部