还剩2页未读,继续阅读
文本内容:
XX年职称英语综合类B级补全短文练习及答案xx年职称英语综合类B级补全短文练习及答案 NASA’s Marsrover Opportunityhas boldlygone whereno roverhas gonebefore—at leastin termsof distance.____1____ On July27,after yearsof movingabout onMartian ground,the golf-cart-sized Opportunityhad drivenmore than24miles,beating theprevious recordholder—a Sovietrover sentto themoon in
1973. “This isso remarkableconsidering Opportunitywas intendedto driveabout1kilometer andwas neverdesigned fordistance,”says JohnCallas,the MarsExploration RoverProject Manager. ____2____“But whatis reallyimportantly isnot howmany milesthe roverhas rackedup,but howmuch exploration and discoverywe haveaomplished overthat distance.” OPPORTUNITY The solar-powered Opportunityand itstwin rover,Spirit,landed onMars10years agoonamission expectedto last3months.____3____ Spirit stoppedmunicating withEarth inMarch xx,a fewmonths afterit gotstuck ina sandpit.But Opportunityhas contin...。