六级练习2016.04.11
[audio]http://sound.yywz123.com/tingbbs/cet6/cet620160411.mp3[/audio]After a year circling the moon with a diverse array of instruments, LRO has revealed detailed images far different from the ones Brown University geology professor Jim Head used when he worked in the Apollo program, (1)_________________________________. Brown says the lunar maps back then were based on images with lower resolution and limited viewing angles, which meant that deciding where astronauts could land involved a fair amount of guesswork.
"But what we have here with the LOLA instrument is in fact the ability to create topographic maps that actually look like images. (2)_________________________________which we've combined together to create these global topographic maps and they give us an even portrayal of the topography, (3)_________________________________."
**** Hidden Message ***** which sent the first man to moon in 1968.
so we have over 2 and a half view sark of laser
largely composion of the whole surface of the moon
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